求小学二年级口算题500道

\u6c42\u5c0f\u5b66\u4e8c\u5e74\u7ea7\u53e3\u7b97\u9898500\u9053

7\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
70\u00f77= 20\u00d710= 320\u00f75\u2248 54\u00d770\u2248 251\u00f74\u2248 6300\u00f77=
131\u00f74\u2248 50\u00d78= 85-45= 0\u00f75= 280\u00f74= 60\u00d740=
840-30= 2700\u00f79= 99\u00d731\u2248 3.1\uff0b2.7= 131\u00f74\u2248 50\u00d78=
7.8-1.8= 350\u00f75= 630\u00f79= 131\u00f76\u2248 10\u00d780= 65-56=
431\u00f76\u2248 15\u00d76= 4.8-0.4= 6.1\uff0b0.7= 91\u00d718\u2248 257\u00f74\u2248
44\u00f74= 20\u00d740= 210-30= 34+28 = 63- 63\u00f79= 120\u00f73\u00d7
800\u00f78= 40\u00d770= 300\u00f74\u2248 59\u00d772\u2248 251\u00f75\u2248 630\u00f77=
131\u00f76\u2248 0\u00d7108= 45-18= 0\u00f715= 120\u00f74= 30\u00d740=
640-70= 1800\u00f79= 99\u00d739\u2248 5.1\uff0b2.6= 411\u00f74\u2248 15\u00d720=
7.3-1.8= 250\u00f75= 6300\u00f79= 431\u00f76\u2248 20\u00d780= 78-56=
491\u00f78\u2248 14\u00d76= 4.8-4.4= 6.1\uff0b4.7= 91\u00d719\u2248 367\u00f74\u2248
55\u00f75= 10\u00d740= 211-30= 134+28 = 50\u00d740-100= 12\u00d720\u00f7
270\u00f79= 20\u00d711= 120\u00f75\u2248 44\u00d717\u2248 351\u00f74\u2248 420\u00f77=
231\u00f74\u2248 50\u00d780= 73-45= 0\u00f725= 1600\u00f74= 20\u00d740=
840-32= 540\u00f79= 89\u00d731\u2248 0.1\uff0b0.8= 371\u00f74\u2248 0\u00d728=
8.3-1.8= 2000\u00f75= 180\u00f79= 131\u00f76\u2248 40\u00d780= 85-51=
531\u00f76\u2248 10\u00d760-= 4.5-4.5= 6.8\uff0b0.2= 41\u00d719\u2248 250\u00f74\u2248
270\u00f73= 11\u00d750= 210-30= 68+28 = 25+25\u00d72= 30\u00f73\u00d710=
100\u00f71= 30\u00d770= 100\u00f75\u2248 19\u00d772\u2248 251\u00f76\u2248 140\u00f77=
234\u00f76\u2248 120\u00d70= 445-15= 0\u00f785= 200\u00f74= 300\u00d740=
740-70= 2700\u00f79= 91\u00d733\u2248 4.1\uff0b2.4= 419\u00f74\u2248 14\u00d720=
7.8-1.8= 1000\u00f75= 360\u00f79= 338\u00f76\u2248 100\u00d780= 98-56=
491\u00f78\u2248 14\u00d76= 4.1-3.1= 6.8\uff0b0.7= 11\u00d719\u2248 167\u00f74\u2248
150\u00f75= 10\u00d740= 100-30= 96+28 = 51+45-28= 10\u00d720+34=
70\u00f77= 20\u00d710= 3200\u00f75\u2248 54\u00d770\u2248 251\u00f74\u2248 6300\u00f77=
131\u00f74\u2248 50\u00d78= 85-45= 0\u00f75= 280\u00f74= 60\u00d740=
840-30= 2700\u00f79= 99\u00d731\u2248 3.1\uff0b2.7= 131\u00f74\u2248 50\u00d78=
7.8-1.8= 350\u00f75= 630\u00f79= 131\u00f76\u2248 10\u00d780= 65-56=
431\u00f76\u2248 15\u00d76= 4.8-0.4= 6.1\uff0b0.7= 91\u00d718\u2248 257\u00f74\u2248
44\u00f74= 20\u00d740= 210-30= 34+28 = 63- 63\u00f79= 120\u00f73\u00d720
800\u00f78= 40\u00d770= 300\u00f75\u2248 59\u00d772\u2248 251\u00f75\u2248 630\u00f77=
131\u00f76\u2248 0\u00d7108= 45-18= 0\u00f715= 120\u00f74= 30\u00d740=
640-70= 1800\u00f79= 99\u00d739\u2248 5.1\uff0b2.6= 411\u00f74\u2248 15\u00d720=
7.3-1.8= 250\u00f75= 6300\u00f79= 431\u00f76\u2248 20\u00d780= 78-56=
491\u00f78\u2248 14\u00d76= 4.8-4.4= 6.1\uff0b4.7= 91\u00d719\u2248 367\u00f74\u2248
55\u00f75= 10\u00d740= 211-30= 134+28 = 50\u00d740-100= 12\u00d720\u00f73=
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 7\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
70\u00f77= 20\u00d710= 320\u00f75\u2248 54\u00d770\u2248 251\u00f74\u2248 6300\u00f77=
131\u00f74\u2248 50\u00d78= 85-45= 0\u00f75= 280\u00f74= 60\u00d740=
840-30= 2700\u00f79= 99\u00d731\u2248 3.1\uff0b2.7= 131\u00f74\u2248 50\u00d78=
7.8-1.8= 350\u00f75= 630\u00f79= 131\u00f76\u2248 10\u00d780= 65-56=
431\u00f76\u2248 15\u00d76= 4.8-0.4= 6.1\uff0b0.7= 91\u00d718\u2248 257\u00f74\u2248
44\u00f74= 20\u00d740= 210-30= 34+28 = 63- 63\u00f79= 120\u00f73\u00d7 125-34 383-25 650-47 253-42 310-85 720-56 250-80 432-45 631-42
138-95 500-350 450-62 198-95 320-63 139-39 421-135 612-318 956-135 325-189 632-600 389-198 642-135 738-625 398-123 956-183 1000-600 780-75 483-154 535-429 625-75 3*0 5*0 6*0 125*3 321*4 245*3 432*7 285*8 528*4 125*8 193*3 319*4 425*3 217*7 712*8 237*2 521*5 342*5 195*7 239*7 712*8 237*2 521*5 342*5 195*7 234*8 523*47\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\uff0b4.351-20\u9898\uff1a
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
12\uff0b39\uff1d 2978-187\uff1d 15\u00d741 \uff1d 55550\u00f711\uff1d
985\uff0b65\uff1d 7.52\uff0d3.02\uff1d 895\uff0d50\uff0b45\uff1d 0.51\uff0b17\uff1d
32.8\uff0b19\uff1d 5.2\uff0b1.3\uff1d 1.6\uff0b0.4\uff1d 4.9\uff0d0.7\uff1d
125\u00f75\uff1d 3612\u00f712\uff1d 0.87\uff0d0.49\uff1d 707\u00f77\uff1d
21-40\u9898\uff1a
20\u00d7110\uff1d 320\u00f75\uff1d 54\u00d770\uff1d 250\u00f74\uff1d
6300\u00f77\uff1d 131\u00f74\uff1d 50\u00d78\uff1d 85-45\uff1d
0\u00f75\uff1d 280\u00f74\uff1d 60\u00d740\uff1d 840-30\uff1d
2700\u00f79\uff1d 99\u00d731\uff1d 3.1\uff0b2.7\uff1d 131\u00f74\uff1d
50\u00d78\uff1d 9.82-1.8\uff1d 350\u00f75\uff1d 9630\u00f79\uff1d
41-60\u9898\uff1a
234\u00f76\uff1d 120\u00d70\uff1d 445-15\uff1d 85850\u00f785\uff1d
200\u00f74\uff1d 300\u00d740\uff1d 740-75\uff1d 2700\u00f79\uff1d
91\u00d733\uff1d 4.1\uff0b2.4\uff1d 419\u00f74\uff1d 14\u00d720\uff1d
7.8-1.8\uff1d 1000\u00f75\uff1d 360\u00f79\uff1d 336\u00f76\uff1d
100\u00d780\uff1d 98-56\uff1d 491\u00f78\uff1d 14\u00d76\uff1d
61-80\u9898\uff1a
4.1-3.1\uff1d 6.8\uff0b0.7\uff1d 11\u00d719\uff1d 168\u00f74\uff1d
150\u00f75\uff1d 10\u00d740\uff1d 100-37\uff1d 96+28 \uff1d
51+45-28\uff1d 10\u00d720+34\uff1d 0.75\uff0b15\uff1d 0.4\uff0b0.8\uff1d
20\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\uff0b0.5\uff1d
0.51\uff0b17\uff1d 32.8\uff0b19\uff1d 5.2\uff0d1.3\uff1d 1.6\u00d70.4\uff1d
81-100\u9898\uff1a
4\uff0b0.25\uff1d 0.36\uff0b1.54\uff1d 80-25\uff1d 70+45\uff1d
560\u00d72\uff1d 16\u00d76\uff1d 300\u00d76\uff1d 540\u00f79\uff1d
30\u00d720\uff1d 400\u00f74\uff1d 350-80\uff1d 160+70\uff1d
18-64\u00f78\uff1d 42\u00f76+20\uff1d 40-5\u00d77\uff1d 80+60\u00f73\uff1d
41+18\u00f72\uff1d 75-11\u00d75\uff1d 42+7-29\uff1d 5600\u00f780\uff1d17\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\uff1d800\u00f78= 40\u00d770= 300\u00f75\u2248 59\u00d772\u2248 251\u00f75\u2248 630\u00f77=
131\u00f76\u2248 0\u00d7108= 45-18= 0\u00f715= 120\u00f74= 30\u00d740=
640-70= 1800\u00f79= 99\u00d739\u2248 5.1\uff0b2.6= 411\u00f74\u2248 15\u00d720=
7.3-1.8= 250\u00f75= 6300\u00f79= 431\u00f76\u2248 20\u00d780= 78-56=
491\u00f78\u2248 14\u00d76= 4.8-4.4= 6.1\uff0b4.7= 91\u00d719\u2248 367\u00f74\u2248
55\u00f75= 10\u00d740= 211-30= 134+28 = 50\u00d740-100= 12\u00d720\u00f7[center][b]2005-2006\u5b66\u5e74\u5ea6\u4e09\u5e74\u7ea7\u6570\u5b66\u671f\u672b\u590d\u4e60\u53e3\u7b97\u9898\uff08\u4e94\uff09[/b][/center]




\u4e09\u5e74____\u73ed \u59d3\u540d______




70\u00f77= 20\u00d710= 3200\u00f75\u2248 54\u00d770\u2248 251\u00f74\u2248 6300\u00f77=
131\u00f74\u2248 50\u00d78= 85-45= 0\u00f75= 280\u00f74= 60\u00d740=
840-30= 2700\u00f79= 99\u00d731\u2248 3.1\uff0b2.7= 131\u00f74\u2248 50\u00d78=
7.8-1.8= 350\u00f75= 630\u00f79= 131\u00f76\u2248 10\u00d780= 65-56=
431\u00f76\u2248 15\u00d76= 4.8-0.4= 6.1\uff0b0.7= 91\u00d718\u2248 257\u00f74\u2248
44\u00f74= 20\u00d740= 210-30= 34+28 = 63- 63\u00f79= 120\u00f73\u00d720=
7\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



2005-2006\u5b66\u5e74\u5ea6\u4e09\u5e74\u7ea7\u6570\u5b66\u671f\u672b\u590d\u4e60\u53e3\u7b97\u9898\uff08\u4e00\uff09
70\u00f77= 20\u00d710= 320\u00f75\u2248 54\u00d770\u2248 251\u00f74\u2248 6300\u00f77=
131\u00f74\u2248 50\u00d78= 85-45= 0\u00f75= 280\u00f74= 60\u00d740=
840-30= 2700\u00f79= 99\u00d731\u2248 3.1\uff0b2.7= 131\u00f74\u2248 50\u00d78=
7.8-1.8= 350\u00f75= 630\u00f79= 131\u00f76\u2248 10\u00d780= 65-56=
431\u00f76\u2248 15\u00d76= 4.8-0.4= 6.1\uff0b0.7= 91\u00d718\u2248 257\u00f74\u2248
44\u00f74= 20\u00d740= 210-30= 34+28 = 63- 63\u00f79= 120\u00f73\u00d7





2005-2006\u5b66\u5e74\u5ea6\u4e09\u5e74\u7ea7\u6570\u5b66\u671f\u672b\u590d\u4e60\u53e3\u7b97\u9898\uff08\u4e8c\uff09





800\u00f78= 40\u00d770= 300\u00f74\u2248 59\u00d772\u2248 251\u00f75\u2248 630\u00f77=
131\u00f76\u2248 0\u00d7108= 45-18= 0\u00f715= 120\u00f74= 30\u00d740=
640-70= 1800\u00f79= 99\u00d739\u2248 5.1\uff0b2.6= 411\u00f74\u2248 15\u00d720=
7.3-1.8= 250\u00f75= 6300\u00f79= 431\u00f76\u2248 20\u00d780= 78-56=
491\u00f78\u2248 14\u00d76= 4.8-4.4= 6.1\uff0b4.7= 91\u00d719\u2248 367\u00f74\u2248
55\u00f75= 10\u00d740= 211-30= 134+28 = 50\u00d740-100= 12\u00d720\u00f7





2005-2006\u5b66\u5e74\u5ea6\u4e09\u5e74\u7ea7\u6570\u5b66\u671f\u672b\u590d\u4e60\u53e3\u7b97\u9898\uff08\u4e09\uff09




\u4e09\u5e74____\u73ed \u59d3\u540d______




270\u00f79= 20\u00d711= 120\u00f75\u2248 44\u00d717\u2248 351\u00f74\u2248 420\u00f77=
231\u00f74\u2248 50\u00d780= 73-45= 0\u00f725= 1600\u00f74= 20\u00d740=
840-32= 540\u00f79= 89\u00d731\u2248 0.1\uff0b0.8= 371\u00f74\u2248 0\u00d728=
8.3-1.8= 2000\u00f75= 180\u00f79= 131\u00f76\u2248 40\u00d780= 85-51=
531\u00f76\u2248 10\u00d760-= 4.5-4.5= 6.8\uff0b0.2= 41\u00d719\u2248 250\u00f74\u2248
270\u00f73= 11\u00d750= 210-30= 68+28 = 25+25\u00d72= 30\u00f73\u00d710=





[center][b]2005-2006\u5b66\u5e74\u5ea6\u4e09\u5e74\u7ea7\u6570\u5b66\u671f\u672b\u590d\u4e60\u53e3\u7b97\u9898\uff08\u56db\uff09[/b][/center]




\u4e09\u5e74____\u73ed \u59d3\u540d______





100\u00f71= 30\u00d770= 100\u00f75\u2248 19\u00d772\u2248 251\u00f76\u2248 140\u00f77=
234\u00f76\u2248 120\u00d70= 445-15= 0\u00f785= 200\u00f74= 300\u00d740=
740-70= 2700\u00f79= 91\u00d733\u2248 4.1\uff0b2.4= 419\u00f74\u2248 14\u00d720=
7.8-1.8= 1000\u00f75= 360\u00f79= 338\u00f76\u2248 100\u00d780= 98-56=
491\u00f78\u2248 14\u00d76= 4.1-3.1= 6.8\uff0b0.7= 11\u00d719\u2248 167\u00f74\u2248
150\u00f75= 10\u00d740= 100-30= 96+28 = 51+45-28= 10\u00d720+34=

\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
70\u00f77= 20\u00d710= 320\u00f75\u2248 54\u00d770\u2248 251\u00f74\u2248 6300\u00f77=
131\u00f74\u2248 50\u00d78= 85-45= 0\u00f75= 280\u00f74= 60\u00d740=
840-30= 2700\u00f79= 99\u00d731\u2248 3.1\uff0b2.7= 131\u00f74\u2248 50\u00d78=
7.8-1.8= 350\u00f75= 630\u00f79= 131\u00f76\u2248 10\u00d780= 65-56=
431\u00f76\u2248 15\u00d76= 4.8-0.4= 6.1\uff0b0.7= 91\u00d718\u2248 257\u00f74\u2248
44\u00f74= 20\u00d740= 210-30= 34+28 = 63- 63\u00f79= 120\u00f73\u00d7
800\u00f78= 40\u00d770= 300\u00f74\u2248 59\u00d772\u2248 251\u00f75\u2248 630\u00f77=
131\u00f76\u2248 0\u00d7108= 45-18= 0\u00f715= 120\u00f74= 30\u00d740=
640-70= 1800\u00f79= 99\u00d739\u2248 5.1\uff0b2.6= 411\u00f74\u2248 15\u00d720=
7.3-1.8= 250\u00f75= 6300\u00f79= 431\u00f76\u2248 20\u00d780= 78-56=
491\u00f78\u2248 14\u00d76= 4.8-4.4= 6.1\uff0b4.7= 91\u00d719\u2248 367\u00f74\u2248
55\u00f75= 10\u00d740= 211-30= 134+28 = 50\u00d740-100= 12\u00d720\u00f7
270\u00f79= 20\u00d711= 120\u00f75\u2248 44\u00d717\u2248 351\u00f74\u2248 420\u00f77=
231\u00f74\u2248 50\u00d780= 73-45= 0\u00f725= 1600\u00f74= 20\u00d740=
840-32= 540\u00f79= 89\u00d731\u2248 0.1\uff0b0.8= 371\u00f74\u2248 0\u00d728=
8.3-1.8= 2000\u00f75= 180\u00f79= 131\u00f76\u2248 40\u00d780= 85-51=
531\u00f76\u2248 10\u00d760-= 4.5-4.5= 6.8\uff0b0.2= 41\u00d719\u2248 250\u00f74\u2248
270\u00f73= 11\u00d750= 210-30= 68+28 = 25+25\u00d72= 30\u00f73\u00d710=
100\u00f71= 30\u00d770= 100\u00f75\u2248 19\u00d772\u2248 251\u00f76\u2248 140\u00f77=
234\u00f76\u2248 120\u00d70= 445-15= 0\u00f785= 200\u00f74= 300\u00d740=
740-70= 2700\u00f79= 91\u00d733\u2248 4.1\uff0b2.4= 419\u00f74\u2248 14\u00d720=
7.8-1.8= 1000\u00f75= 360\u00f79= 338\u00f76\u2248 100\u00d780= 98-56=
491\u00f78\u2248 14\u00d76= 4.1-3.1= 6.8\uff0b0.7= 11\u00d719\u2248 167\u00f74\u2248
150\u00f75= 10\u00d740= 100-30= 96+28 = 51+45-28= 10\u00d720+34=
70\u00f77= 20\u00d710= 3200\u00f75\u2248 54\u00d770\u2248 251\u00f74\u2248 6300\u00f77=
131\u00f74\u2248 50\u00d78= 85-45= 0\u00f75= 280\u00f74= 60\u00d740=
840-30= 2700\u00f79= 99\u00d731\u2248 3.1\uff0b2.7= 131\u00f74\u2248 50\u00d78=
7.8-1.8= 350\u00f75= 630\u00f79= 131\u00f76\u2248 10\u00d780= 65-56=
431\u00f76\u2248 15\u00d76= 4.8-0.4= 6.1\uff0b0.7= 91\u00d718\u2248 257\u00f74\u2248
44\u00f74= 20\u00d740= 210-30= 34+28 = 63- 63\u00f79= 120\u00f73\u00d720
800\u00f78= 40\u00d770= 300\u00f75\u2248 59\u00d772\u2248 251\u00f75\u2248 630\u00f77=
131\u00f76\u2248 0\u00d7108= 45-18= 0\u00f715= 120\u00f74= 30\u00d740=
640-70= 1800\u00f79= 99\u00d739\u2248 5.1\uff0b2.6= 411\u00f74\u2248 15\u00d720=
7.3-1.8= 250\u00f75= 6300\u00f79= 431\u00f76\u2248 20\u00d780= 78-56=
491\u00f78\u2248 14\u00d76= 4.8-4.4= 6.1\uff0b4.7= 91\u00d719\u2248 367\u00f74\u2248
55\u00f75= 10\u00d740= 211-30= 134+28 = 50\u00d740-100= 12\u00d720\u00f73=
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 7\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
70\u00f77= 20\u00d710= 320\u00f75\u2248 54\u00d770\u2248 251\u00f74\u2248 6300\u00f77=
131\u00f74\u2248 50\u00d78= 85-45= 0\u00f75= 280\u00f74= 60\u00d740=
840-30= 2700\u00f79= 99\u00d731\u2248 3.1\uff0b2.7= 131\u00f74\u2248 50\u00d78=
7.8-1.8= 350\u00f75= 630\u00f79= 131\u00f76\u2248 10\u00d780= 65-56=
431\u00f76\u2248 15\u00d76= 4.8-0.4= 6.1\uff0b0.7= 91\u00d718\u2248 257\u00f74\u2248
44\u00f74= 20\u00d740= 210-30= 34+28 = 63- 63\u00f79= 120\u00f73\u00d7 125-34 383-25 650-47 253-42 310-85 720-56 250-80 432-45 631-42
138-95 500-350 450-62 198-95 320-63 139-39 421-135 612-318 956-135 325-189 632-600 389-198 642-135 738-625 398-123 956-183 1000-600 780-75 483-154 535-429 625-75 3*0 5*0 6*0 125*3 321*4 245*3 432*7 285*8 528*4 125*8 193*3 319*4 425*3 217*7 712*8 237*2 521*5 342*5 195*7 239*7 712*8 237*2 521*5 342*5 195*7 234*8 523*47\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\uff0b4.351-20\u9898\uff1a
1.01\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\u00f70.5\uff1d
12\uff0b39\uff1d 2978-187\uff1d 15\u00d741 \uff1d 55550\u00f711\uff1d
985\uff0b65\uff1d 7.52\uff0d3.02\uff1d 895\uff0d50\uff0b45\uff1d 0.51\uff0b17\uff1d
32.8\uff0b19\uff1d 5.2\uff0b1.3\uff1d 1.6\uff0b0.4\uff1d 4.9\uff0d0.7\uff1d
125\u00f75\uff1d 3612\u00f712\uff1d 0.87\uff0d0.49\uff1d 707\u00f77\uff1d
21-40\u9898\uff1a
20\u00d7110\uff1d 320\u00f75\uff1d 54\u00d770\uff1d 250\u00f74\uff1d
6300\u00f77\uff1d 131\u00f74\uff1d 50\u00d78\uff1d 85-45\uff1d
0\u00f75\uff1d 280\u00f74\uff1d 60\u00d740\uff1d 840-30\uff1d
2700\u00f79\uff1d 99\u00d731\uff1d 3.1\uff0b2.7\uff1d 131\u00f74\uff1d
50\u00d78\uff1d 9.82-1.8\uff1d 350\u00f75\uff1d 9630\u00f79\uff1d
41-60\u9898\uff1a
234\u00f76\uff1d 120\u00d70\uff1d 445-15\uff1d 85850\u00f785\uff1d
200\u00f74\uff1d 300\u00d740\uff1d 740-75\uff1d 2700\u00f79\uff1d
91\u00d733\uff1d 4.1\uff0b2.4\uff1d 419\u00f74\uff1d 14\u00d720\uff1d
7.8-1.8\uff1d 1000\u00f75\uff1d 360\u00f79\uff1d 336\u00f76\uff1d
100\u00d780\uff1d 98-56\uff1d 491\u00f78\uff1d 14\u00d76\uff1d
61-80\u9898\uff1a
4.1-3.1\uff1d 6.8\uff0b0.7\uff1d 11\u00d719\uff1d 168\u00f74\uff1d
150\u00f75\uff1d 10\u00d740\uff1d 100-37\uff1d 96+28 \uff1d
51+45-28\uff1d 10\u00d720+34\uff1d 0.75\uff0b15\uff1d 0.4\uff0b0.8\uff1d
20\u00d799\uff1d 420\u00f735\uff1d 25\u00d712\uff1d 135\uff0b0.5\uff1d
0.51\uff0b17\uff1d 32.8\uff0b19\uff1d 5.2\uff0d1.3\uff1d 1.6\u00d70.4\uff1d
81-100\u9898\uff1a
4\uff0b0.25\uff1d 0.36\uff0b1.54\uff1d 80-25\uff1d 70+45\uff1d
560\u00d72\uff1d 16\u00d76\uff1d 300\u00d76\uff1d 540\u00f79\uff1d
30\u00d720\uff1d 400\u00f74\uff1d 350-80\uff1d 160+70\uff1d
18-64\u00f78\uff1d 42\u00f76+20\uff1d 40-5\u00d77\uff1d 80+60\u00f73\uff1d
41+18\u00f72\uff1d 75-11\u00d75\uff1d 42+7-29\uff1d 5600\u00f780\uff1d17\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\uff1d800\u00f78= 40\u00d770= 300\u00f75\u2248 59\u00d772\u2248 251\u00f75\u2248 630\u00f77=
131\u00f76\u2248 0\u00d7108= 45-18= 0\u00f715= 120\u00f74= 30\u00d740=
640-70= 1800\u00f79= 99\u00d739\u2248 5.1\uff0b2.6= 411\u00f74\u2248 15\u00d720=
7.3-1.8= 250\u00f75= 6300\u00f79= 431\u00f76\u2248 20\u00d780= 78-56=
491\u00f78\u2248 14\u00d76= 4.8-4.4= 6.1\uff0b4.7= 91\u00d719\u2248 367\u00f74\u2248
55\u00f75= 10\u00d740= 211-30= 134+28 = 50\u00d740-100=

2.8×0.4= 1.12
14-7.4=6.6,
1.92÷0.04=48,
0.32×500=160,
0.65+4.35= 5
10-5.4=4.6,
4÷20=0.2,
3.5×200=700,
1.5-0.06=1.44
0.75÷15=0.05,
0.4×0.8=0.32,
4×0.25=1,
0.36+1.54=2
1.01×99=99.99,
420÷35=12,
25×12=300,
135÷0.5=270
3/4 1/4 =1,
2 4/9 =22/9,
3 - 2/3 =7/3,
3/4 - 1/2= 1/4
1/6 1/2 -1/6 =1/2,
7.5-(2.5 3.8)=1.2,
7/8 3/8 =5/4
3/10 1/5 =1/2,
4/5 - 7/10 =1/10,
2 - 1/6 -1/3 =1.5
0.51÷17=0.03,
32.8+19=51.8,
5.2÷1.3=4,
1.6×0.4= 0.64
4.9×0.7=3.43,
1÷5=0.2,
6÷12=0.5,
0.87-0.49=0.38

1.(1 1/2)(1 1/3)(1 1/4)......(1 1/100)
2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100)
3.8 2-8 2
4.25*4/25*4
5.7.26-(5.26-1.5)
6.286 198
7.314-202
8.526 301
9.223-99
10.6.25 3.85-2.125 3.875
11.9-2456*21
12.0.5/11.5-4*2.75
13.1/2×3/5
14.3.375 5.75 2.25 6.625
15.1001-9036÷18
16.3.8×5.25 14.5
17.2.1*4.3 5.7*2.1
18.30×1/3
19.102*45-328
20.2/3×12
21.2.8*3.1 17.6/8
22.3/5×5/6
23.(50-12.5)/2.5
24.2/5×1/3
25.6110*47 639
26.1/2-1/6
27.3.5*2.7-52.2/18
28.1/7×1/5
29.3.375*0.97 0.97*6.625
30.25×4/5
31.6.54 2.4 3.46 0.6
32.5/6-1/2
33.95.6*1.8 95.6*8.2
34.1/2×1/5
35.600-420/12
36.344/3.6-5.4*0.25
37.16/2 30/2 90/6
38.3001-1998.
39.5000-105*34
40.0.15/0.25 0.75*1.2
41.(1/2 1/3 1/4)*0.24
42.(25 4)*4
43.300-4263/21
44.0.81/0.25 5.96
45.403÷13×27
46.1.5×4.2-0.75÷0.25
47.3.27×4 3.27×5.7
48.(1.2 1.8)×4.51025-768÷32
49.0.25×80-0.45÷0.9
50.1025-768÷32
51.0.25*2.69*4
52.2348 275*16
53.2/9*15/8-1/12*9/5
54.2.4 2.4*(5.375-3.375)
55.645-45*12
56.0.15 1.2/0.24-0.45
57.3.75-(2.35 0.25/1.25)
58.76*1/4 23*25/100 0.25
59.10-2.87-7.13
60.0.96 9.6*9.9
61.7.5-5.7*1/3
62.12.37-3.25-6.75
63.16*6.8 2.2*16 16
64.401*19 284
65.58.7-16.65/3.7
66.0.4*4.7*2.5 (2.3 5.3)
67.9.31-1.125-7.875
68.640 128*45
69.8.2*1.6-0.336/4.2
70.400*(0.62 0.08)

2/1*2=1
3/1*3=1
3/2*3=2
3/1*6=2
4/3*8=6
5/3*20=12
7/3*14=6
8/7*40=35
4/3*16=12
9/5*27=15
2/1*30=15
12/7*24=14
30/1*30=1
51/9*102=18
19/9*76=36
4/9*8=18
5/8*90=144
99/98*99=98
3/14*6=28
7/1*28=4
10/1*90=9
5/3*105=63
19/7*38=14
5/1*25=5
8/19*16=38
61/60*122=120
7/2*28=8 6/1*48=8
9/7*18=14
25/7*100=28
9/5*81=45 8/9*16=18

2/1*2=1
3/1*3=1
3/2*3=2
3/1*6=2
4/3*8=6
5/3*20=12
7/3*14=6
8/7*40=35
4/3*16=12
9/5*27=15
2/1*30=15
12/7*24=14
30/1*30=1
51/9*102=18
19/9*76=36
4/9*8=18
5/8*90=144
99/98*99=98
3/14*6=28
7/1*28=4
10/1*90=9
5/3*105=63
19/7*38=14
5/1*25=5
8/19*16=38
61/60*122=120
7/2*28=8
6/1*48=8
9/7*18=14
25/7*100=28
9/5*81=45
8/9*16=18
12÷3/5=12×(5/3)
9÷6/7=9×( 7/6 )
30÷5/6=30×(6/5 )
4×(3/2 )=4÷2/3
4÷5/7=4×7/5
3÷4/5=3×5/4
24÷7/16=24×(16/7 )
A÷C/B=A×B/C
4÷4/5=5
6÷3/4=8
10÷2/5=25
18÷4/9=81/2
4×4/5=16/5
6×3/4=18/4
10×2/5=4
18×4/9=8
3÷3/4=4
2÷1/3=6
6÷4/5=15/2
1÷5/7=7/5
3/4÷3=1/4
1/3÷2=1/6
4/5÷6=2/15
5/7÷1=5/7
2/1*2=1
3/1*3=1
3/2*3=2
3/1*6=2
4/3*8=6
5/3*20=12
7/3*14=6
8/7*40=35
4/3*16=12
9/5*27=15
2/1*30=15
12/7*24=14
30/1*30=1
51/9*102=18
19/9*76=36
4/9*8=18
5/8*90=144
99/98*99=98
3/14*6=28
7/1*28=4
10/1*90=9
5/3*105=63
19/7*38=14
5/1*25=5
8/19*16=38
61/60*122=120
7/2*28=8
6/1*48=8
9/7*18=14
25/7*100=28
9/5*81=45
8/9*16=18

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