小学五年级口算题，要分数的，加减乘除都可以，有多少要多少。答案要不要都可以，注意是要分数的。急等！ 五年级的的口算(不要分数)

\u6c42\uff0c\u5c0f\u5b66\u4e94\u5e74\u7ea7\u6570\u5b66\u4e0a\u518c\u53e3\u7b97\u9898400\u9053\uff0c\u5e26\u7b54\u6848\u7684\uff0c\u7ed9\u5b69\u5b50\u51fa\u9898\u72af\u4e86\u96be\uff0c\u4e0d\u8981\u4e09\u8fde\u7b97\u7684\u3002\u52a0\u51cf\u4e58\u9664\u90fd\u884c\uff0c\u8c22\u8c22

0.8\u00d70.2= 5.6\u00d73= 0.25\u00d74= 3.1\u00d70.2= 0.45\u00d76= 0.4\u00d70.25= 3.6\u00d70.8= 2.9\u00d71= 9.6\u00d73= 0.05\u00d70.4= 120\u00d70.5= 7.3\u00d74= 0.75\u00d72= 4.3\u00d70.2= 12.5\u00d78= 66\u00d70.4= 6.01\u00d70.3= 0\u00d734.5= 45.2\u00d72= 1.3\u00d73= 4.25\u00d74= 0. 07\u00d70.5= 33\u00d70.04= 6.5\u00d74= 2.3\u00d70.06= 15\u00d70.08= 0.09\u00d70.9= 4.7\u00d70.1= 54\u00d70.8= 1.6\u00d70.03= 0.8\u00d70.9= 0.6\u00d7100= 17.5\u00d70.01= 3.2\u00d70.5= 25\u00d70.4= 12.5\u00d70.8= 6\u00d76.5= 3.6\u00d70.7= 6.5\u00d70.4= 8.5\u00d70.2= 0.66\u00d70.3= 2.5\u00d70.4= 7.7\u00d70.8= 0.012\u00d720= 4.6\u00d70.4= 3\u00d70.09= 2.2\u00d70.05= 4.1\u00d70.6= 0.75\u00d70.4= 23\u00d70.4= 0.32\u00d7100= 5.5\u00d72= 4.73\u00d710= 0\u00d723.5= 0.25\u00d74= 7.2\u00d70.5= 3.3\u00d70.5= 60\u00d70.8= 3.4\u00d70.6= 0.125\u00d78=
4-1.4= 82-7.2= 19+9.1= 4.1-0.89= 5.68+0.42= 6.1-5.1= 0.72- 0.24= 0.8+0.18= 0.89-0.25= 1-0.98= 0.048+0.52= 5\u00d7400= 19.9+11.1= 187\u00f71000= 1+3.89= 0.081\u00d710= 75\u00f710= 0.96\u00f78= 0.8\u00d77= 1.5\u00d77= 1.32\u00d78= 0.7\u00d78= 10.3\u00d72= 5\u00d70.6= 0.9\u00d70.3= 3.5\u00d70.2= 2.01\u00d70= 10\u00d70.05= 0.13\u00d77= 0.21\u00d7100= 0.7\u00d74= 0.05\u00d74= 4\u00d70.3= 430-250= 0.17+0.06= 1.02-0.09= 7200\u00f7800= 0.17+0.6= 0.83-0.6= 17\u00d7300= 0.98-0.09= 0.2+0.78= 600\u00d70.7= 10.2+0.02= 0.15+0.7= 670+250= 10.2+0.2= 9.2-6= 8500\u00f7500= 3.2-3.2= 3.7+2.3= 25\u00d7100= 3.2-0.32= 2+2.8= 380-290= 0.35+0.5= 0.35+0.63= 3500\u00f770= 3.1+3= 3.8+0.38=
7500\u00f7250= 3.8+1= 0.95-0.05= 450+780= 3.1+0.3= 3+0.3= 630\u00f79= 4.5-0.4= 9.5-5= 330\u00d79= 9.53-1.53= 9.5-0.5= 3.5+2.4= 1-0.95= 0.3+0.27= 0.47+0.13= 4.5+4= 4-0.6= 0.95+0.05= 2.5+3.2= 0.74+0.16= 23\u00d7100= 9.8-4.8= 480\u00f740= 0.53\u00f7100= 5.1+2.3= 125\u00d780= 0.078\u00f710= 0.52+0.4= 70\u00d712= 0.25\u00d7100= 3.4-2.8= 0.6-0.37= 0.052\u00d710= 10+0.08= 1-0.75= 0.5\u00d71000= 0.82+0.3= 13.5+6.5= 3.05\u00d7100= 1.2-0.8= 21.6-12.6= 63\u00f7100= 0.83-0.5= 0.76+0.14= 80\u00f71000= 2.7+0.4= 0.72-0.43= 30\u00d7100= 0.92-0.2= 3.5+4.8= 3.5+2.4= 5+0.07= 1-0.61= 0.47+0.23= 0.25+0.75= 3.7+0.33= 0.51+0.33=
1-0.6= 8-4.6=
5.8-3.6= 0.52+0.4= 6.45+5.5= 4.5-1.3= 3.4-2.8= 9.53-1.53= 8.8-6.7= 10+0.08= 9.5-7.3= 7.2+0.8= 7.82+0.3= 8.8-6.7= 9.5-7.3= 1-0.95= 3.4-2.8= 0.96-0.35= 9.53-1.53= 0.25+0.75= 1.2-0.8= 0.83-0.5= 2.7+0= 12.5\u00d78= 2.3\u00d74= 3.25\u00d70= 0.4\u00d750= 30\u00d70.1= 2.6\u00d73= 4.1\u00d72= 0.35\u00d70.2= 7.5\u00d70.1= 2.5\u00d72= 0.5\u00d710= 0.6\u00d78= 2.8\u00d710= 0.7\u00d70.8= 5.6+0.4= 4.7+2.3= 4.5\u00d72= 7.2\u00d70.8= 6\u00d73.4= 0.62-0.32= 0.75\u00d7100= 0.02\u00d70.5= 3.6\u00d70.3= 5.6\u00d7100= 0.75\u00f70.25= 0.125\u00d78= 0.86\u00f72= 0.56\u00f728= 0.36\u00f70.4= 0.7\u00d79= 3.6\u00f724= 0.8\u00d71.1= 46.7-3.8= 12.8\u00f74= 5.2\u00f713= 1.64+4.1= 10\u00f720= 24\u00f715= 0.35\u00d70.6=
4.7+2.3= 4.5\u00d72= 6.9\uff0d2.5= 7.2\u00d70.8= 6\u00d73.4= 0.62\uff0d0.32= 1.4\u00d70.5= 0.75\u00d7100= 0.02\u00d70.5= 3.6\u00f70.3= 6.3\u00f77= 5.6\u00f7100= 0.75\u00f70.25= 0.125\u00d78= 4.8\u00f70.3= 0.96\u00f72= 0.56\u00f728= 0.36\u00f70.4= 0.64\u00f70.8= 0.72\u00f73.6= 3.6\u00f712= 0.8\u00d71.1= 7.2+12.8= 46.7\uff0d3.8= 12.8\u00f74= 5.2\u00f713= 12.5\u00f75= 1.64\u00f741= 10\u00f720= 24\u00f715= 8.65\u00d710= 0.35\u00d70.6= 3.08\u00d70.01= 4.95\u00d71000= 6.9\u00d70.1= 0.4\u00d70.5= 2.4\u00f70.8= 10.8\u00f79= 9.6\u00f70.8= 0.108\u00f72= 4.95\u00f70.9= 9.65\u00f70.1= 0.325\u00d7100= 2.5\u00d78= 0. 56\u00f70.7= 0.125\u00d74= 3.28\u00d70.1= 3.9\u00f70.13= 7.2\u00d70.1= 0.01\u00d70.1=
1\u00f72.5= 1.25\u00d70.8= 3.2\u00f70.04= 0\u00f71.7= 1.4\u00f70.5= 1.55\u00f70.5= 3.15\u00f70.7= 1.86\u00f70.2= 1.04\u00f70.8= 0.38\u00f70.1= 1.36\u00f70.2= 1.16\u00f70.4= 0.12\u00f70.6= 0.27\u00f70.9= 0.48\u00f70.2= 8.73\u00f70.9= 0.72\u00f70.3= 0.46\u00f70.1= 0.22\u00f70.2= 3.45\u00f70.5= 4.62\u00f70.6= 1.92\u00f70.4= 0.9\u00f70.3= 5.11\u00f70.7= 0.35\u00f70.1= 3.92\u00f70.8= 4.32\u00f70.9= 0.24\u00f70.8= 3.15\u00f70.7= 0.98\u00f70.7= 1.8\u00f70.6= 1.76\u00f70.4= 2.64\u00f70.4= 7.56\u00f70.9= 1.19\u00f70.7= 1.53\u00f70.9= 1.33\u00f70.7= 1.18\u00f70.2= 0.09\u00f70.1= 0.21\u00f70.1= 1.54\u00f70.2= 8.28\u00f70.9= 3\u00f70.5= 1.71\u00f70.3= 7.44\u00f70.8= 2.48\u00f70.8= 0.75\u00f70.5= 1.92\u00f70.8= 1.2\u00f70.8= 0.07\u00f70.7=
3.69\u00f70.9= 2.28\u00f70.3= 0.25\u00d70.4= 1.6\u00f70.8= 0.8\u00d77\uff1d 1.32\u00d78\uff1d 1.5\u00d77\uff1d 0.7\u00d78\uff1d 10.3\u00d72\uff1d 3.5\u00d70.2\uff1d 0.9\u00d70.3\uff1d 5\u00d70.6\uff1d 10\u00d70.05\uff1d 0.13\u00d77\uff1d 0.7\u00d74\uff1d 0.05\u00d74\uff1d 12.5\u00d78\uff1d 0.4\u00d750\uff1d 3.25\u00d70\uff1d 2.3\u00d74\uff1d 2.6\u00d73\uff1d 7.5\u00d70.1\uff1d 0.45\u00d70.2\uff1d 4.1\u00d72\uff1d 3.5\u00d70.01\uff1d 9\u00d70.5\uff1d 0\u00d79.8\uff1d 3.9\uff0b0.39\uff1d 4.1\u00d72\uff1d 2.6\u00d73\uff1d 1.25\u00d78\uff1d 7.5\u00d70.1\uff1d 1\u00d70.06\uff1d 0.9\u00d70.3\uff1d 9\u00d70.5= 2.5\u00d70.4= 10\uff0d3.52= 8.2\uff0b1.8= 0.2\u00d70.4= 0.22\u00d74=

17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d
17\u00d740\uff1d 100\uff0d63\uff1d 3.2\uff0b1.68\uff1d 2.8\u00d70.4\uff1d
14\uff0d7.4\uff1d 1.92\u00f70.04\uff1d 0.32\u00d7500\uff1d 0.65\uff0b4.35\uff1d
10\uff0d5.4\uff1d 4\u00f720\uff1d 3.5\u00d7200\uff1d 1.5\uff0d0.06\uff1d
0.75\u00f715\uff1d 0.4\u00d70.8\uff1d 4\u00d70.25\uff1d 0.36\uff0b1.54\uff1d
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=
1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =
3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =
0.51\u00f717\uff1d 32.8\uff0b19\uff1d 5.2\u00f71.3\uff1d 1.6\u00d70.4\uff1d
4.9\u00d70.7\uff1d 1\u00f75\uff1d 6\u00f712\uff1d 0.87\uff0d0.49\uff1d

2.5×2= 0.5×10= 0.6×8= 2.1×2=
2.8×10= 0.7×0.8= 0.04×20= 5.6+0.4=
4.7+2.3= 4.5×2= 6.9－2.5= 7.2×0.8=
6×3.4= 0.62－0.32= 1.4×0.5= 0.75×100=
0.02×0.5= 3.6×0.3= 6.3÷7= 5.6×100=
0.75÷0.25= 0.125×8= 4.8÷0.3= 0.86÷2=
0.56÷28= 0.36÷0.4= 0.64÷0.8= 0.7×9=
3.6÷24= 0.8×1.1= 7.2+12.8= 46.7－3.8=
12.8÷4= 5.2÷13= 12.5÷5= 1.64+4.1=
10÷20= 24÷15= 8.65×10= 0.35×0.6=
3.08×0.01= 4.95×1000= 6.9×0.1= 0.4×0.5=
2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2=
4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8=
0. 56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=
7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8=
1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=
0.22×102= 9.6÷0.8= 5×0.24= 4.5－0.05=
3.9÷0.13 16.5÷0.5= 5×0.12= 24×0.5=
4.8×0.5= 2.8＋4.2= 0.84÷2.1= 5÷0.25=
7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=
0.56÷0.8= 7.4－2.8= 0.18÷0.2= 0.16÷8=
4.5×0.02= 8＋7.2= 1.2×30= 0.012×0.2=
7.3×0.3= 0÷6= 3.6÷0.12= 7.8÷0.6=
2÷5= 4.5＋5= 0.3÷0.6= 0.96÷0.2=
10.5×0.4= 7.3＋0.27= 8×0.125= 0.54÷0.6=
0.61＋0.39= 0.56÷28= 10÷20= 4.08÷0.4=
10－9.4= 0.8×0.11= 7.2＋12.8= 5.6÷0.01=
2.3×100= 0.75×100= 0.108÷2= 10.8÷9=
7.8÷0.01= 5.4÷0.6= 3÷5= 7×0.62=
12÷0.5= 5.2×0.4= 12.2÷0.2= 5.6÷100=
0.41＋3.7= 0.02×0.5= 7.2－0.8= 1.4×0.5=
84÷0.21= 0.75÷0.25= 2.5×16= 0.108÷2=
1.75＋32.5= 16－5.07= 5.2÷13= 1.64÷41=
1.02×0.2= 0.26×0.3= 8.4×0.02= 1.2×6=
0.8×0.05= 12.6÷0.03= 8.71÷0.1= 21÷0.21=
0.8×0.13= 0.34÷17= 8.08÷0.4= 0.5×2.2=
1.24×4= 3.27＋0.63= 5.02×0.3= 0.3×0.5=
5.6÷7= 72÷ 7.2= 0.7÷0.35= 0.7÷1.4
0.48÷0.04= 1.25÷2.5= 5.5＋5.5= 16.8÷8=
0.54＋2.2= 3.5－0.05= 2÷0.02= 0.25×40=
1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=
46.5＋52.5= 0.45×102= 1.25×88= 2.64＋3.85＋1.54=
8×1.25= 7÷3.5= 4.2÷0.7÷6= 0.4×8.6×25=
0.27÷0.3= 2.5×101= 0.65×101－0.65= 2.6×7÷2.6×7=
0.02×0.5= 3.6×0.3= 6.3÷7= 5.6×100=
7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=
1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=
2.5×2= 0.5×10= 0.6×8= 2.1×2=
0.61＋0.39= 0.56÷28= 10÷20= 4.08÷0.4=
1.2×0.3 = 6.6÷1.1 = 4.9÷7= 0÷0.48=
2.3÷0.1﹦
8×5.1=
12-0.05×4=
4.2×3﹦
2.01÷3=
16-4.5-5.5=
1.8÷0.3＝
3.72÷4=
13-0.5-4=
1.1×0.7=
2.32-0.4=
1.9+5.1÷51=
3.2×50=
3.2×0.5=
1×0.01÷0.1=
1.25÷0.5=
1.29÷3=
7.2-1.2+6.7=
3.2-1.68=
5.4×0.2=

+、-、×、÷、= 符号如何来的？

+、-、×、÷和 = 这五个符号，大家对它们都是再熟悉不过的了，但是你知道它们的来历吗?

远古时期，古希腊人和印度人都是把两个数字写在一起表示加法,把两个数字写得分开一些来表示减法。中世纪后期，欧洲商业逐渐发达。一些商人常在装货的箱子上画一个“+”，表示重量超过一些;画一个“-”，表示重量略微不足。文艺复兴时期，意大利的艺术大师达·芬奇在他的一些作品中也采用过“+”和“-”的记号。公元1489年，德国人威德曼在他的著作中正式用这两个符号来表示加减运算。后来经过法国数学家韦达的大力宣传和提倡，这两个符号才开始普及，到1603年终于获得大家的公认。

×、÷符号的使用，不过300多年。据说，英国人威廉·奥特来德1631年首先在他的著作中用“×”表示乘法，后人沿用至今。

中世纪时，阿拉伯数学相当发达，大数学家阿尔·花拉子米曾用“3/4”来表示3被4除。许多人认为，现在通用的分数记号，即来源于此。直到1630年，在英国人约翰·比尔的著作中才出现了“÷”号，据推测他是根据阿拉伯人的除号“—”与比的记号“:”合并转化而成的。

现在绝大多数国家的出版物中，都用+、-来表示加与减。

×、÷却没有普遍使用，一些国家的课本中用“.”代替“×”，而在俄国和德国的出版物中一般用“:”来代替“÷”。

那么=这个符号又是怎么产生的呢?巴比伦和埃及曾用过各种记号来表示相等，而最早使用近代的 = 符号却是在中世纪时，在雷科德的名著《智慧的磨刀石》中。他说之所以选择两条等长的平行线作为等号，是因为它们再相等不过了。但是 = 号直到18世纪才普及。

最 少 要 几 分 钟

华罗庚爷爷是世界著名的中国数学家，他出生在一个贫民家庭，他非常热爱学习，总是争分夺秒地学习，在碰到问题的时候，总是靠自己动脑筋解决。

1965年，华罗庚爷爷在他的一本书中出了一道题目。华爷爷出这道题的目的，是想训练小朋友做几件事时，合理安排时间的本领。

题目是这样的：洗水壶需要1分钟，烧开水需要15分钟，洗茶杯需要1分钟，拿茶叶需要2分钟，问最少要几分钟可以泡好茶?

同学们，怎样合理安排这几件事，才能使所用的时间最省呢？那就要能在同一时间内做几件事，先洗水壶，接着烧开水，烧上水以后，需要等15分钟水才能开。在15分钟内，可以洗茶杯，拿茶叶，水开了就泡茶，这样，只用16分钟就行了。同学们，当你要做几件事时，能不能用华爷爷教给我们的方法来安排呢?

想一想:

从这个故事中，会受到什么启发?

自己买本分数专题的书不就可以了吗？

不知道

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绛旓細浜斿勾绾т笅鍙ｇ畻棰棰樼洰 50閬 鎬ラ渶!!!(鍙鍒嗘暟) 蹇呴渶鍒嗘暟... 蹇呴渶鍒嗘暟 灞曞紑  鎴戞潵绛 5涓洖绛 #鐑# 缃戞枃璐ㄩ噺鏄笉鏄笅闄嶄簡? 浜斿皬鍙跺缓涓 2011...8銆佽儨鍒灏忓浜斿勾绾3鐝綋鑲茶揪鏍囦汉鏁版槸24浜,娌¤揪鏍囦汉鏁版槸12浜,杈炬爣浜烘暟鍗犲叏鐝汉鏁扮殑鍑犲垎涔嬪嚑?9.鐜嬪笀鍌6灏忔椂鍔犲伐闆朵欢34涓,鏉庡笀浠7灏忔椂鍔犲伐闆朵欢40涓.璋佺殑...

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绛旓細2.5脳2= 0.5脳10= 0.6脳8= 2.1脳2= 2.8脳10= 0.7脳0.8= 0.04脳20= 5.6+0.4= 4.7+2.3= 4.5脳2= 6.9锛2.5= 7.2脳0.8= 6脳3.4= 0.62锛0.32= 1.4脳0.5= 0.75脳100= 0.02脳0.5= 3.6脳0.3= 6.3梅7...

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