求小学四年级下数学小数简便递等式 求小学四年级下数学递等式简便计算题
\u56db\u5e74\u7ea7\u6570\u5b66\u9012\u7b49\u5f0f\u7b80\u5355\u989890\uff0b5\u00d760
\uff0830\uff0b10\uff09\u00d711
280\u00f7\uff085\u00d714\uff09
120\u00f7\uff0860\u00f715\uff09
24\u00d7\uff0886-56\uff09
\uff08170\uff0b40\uff09\u00f730
88\u00f7\uff0872-50\uff09
90\uff0d3\u00d713
450\uff0d\uff0850\uff0b150\uff09
6\u00d7\uff0831\uff0d15\uff09
\uff0895\uff0d20\uff09\u00f725
90\uff0d40\u00d72
\uff0890\uff0d40\uff09\u00d72
350\u00f750\uff0b20
350\u00f7\uff0850\uff0b20\uff09
72\u00f712\u00d73
72\u00f7\uff0812\u00d73\uff09
40\u00d7\uff0838\uff0b12\uff09
28\uff0b56\u00f728
\uff0890\uff0d12\uff09\u00f726
810\u00f7\uff085\u00d718\uff09
160\uff0d\uff0895\uff0d15\uff09
\uff0870\uff0b60\uff09\u00d74
774\u00f7\uff0827\uff0b16\uff09
56\u00d7208\uff0b56\u00d792 678\uff0b678\u00d799 103\u00d712
76\uff0b82\uff0b118\uff0b124 489\uff0b665\uff0b211 76\u00d762\uff0b62\u00d7124
39\u00d728\uff0d39\u00d78 620\uff0d204\uff0d116 45\u00d7199\uff0b45
25\u00d7204 125\u00d788 125\u00d715\u00d78\u00d72
401\u00d775 \uff08125\uff0b7\uff09\u00d78 240\u00f716\u00f75
420\u00f715\u00f74 982\uff0d527\uff0d73 653\uff0d65\uff0d35
250\u00d713\u00d74 8\u00d76\u00d7125 125\u00d724
25\u00d744 312\u00d74\uff0b188\u00d74 592\u00d7127 6.9\uff0b4.8\uff0b3.1 0.456\uff0b6.22\uff0b3.78 15.89\uff0b(6.75\uff0d5.89)
4.02\uff0b5.4\uff0b0.98 5.17\uff0d1.8\uff0d3.2 13.75\uff0d(3.75\uff0b6.48)
3.68\uff0b7.56\uff0d2.68 7.85\uff0b2.34\uff0d0.85\uff0b4.66 35.6\uff0d1.8\uff0d15.6\uff0d7.2
3.82\uff0b2.9\uff0b0.18\uff0b9.1 9.6\uff0b4.8\uff0d3.6 7.14\uff0d0.53\uff0d2.47
5.27\uff0b2.86\uff0d0.66\uff0b1.63 13.35\uff0d4.68\uff0b2.65 73.8\uff0d1.64\uff0d13.8\uff0d5.36
47.8\uff0d7.45+8.8 0.398+0.36+3.64 15.75+3.59\uff0d0.59+14.25
66.86\uff0d8.66\uff0d1.34 0.25\u00d716.2\u00d74 (1.25\uff0d0.125)\u00d78
3.6\u00d7102 3.72\u00d73.5\uff0b6.28\u00d73.5 36.8\uff0d3.9\uff0d6.1
15.6\u00d713.1\uff0d15.6\uff0d15.6\u00d72.1 4.8\u00d77.8\uff0b78\u00d70.52 32\uff0b4.9\uff0d0.9
4.8\u00d7100.1 56.5\u00d79.9\uff0b56.5 7.09\u00d710.8\uff0d0.8\u00d77.09
25.48\uff0d(9.4\uff0d0.52) 4.2\u00f73.5 320\u00f71.25\u00f78
18.76\u00d79.9\uff0b18.76 3.52\u00f72.5\u00f70.4 3.9\uff0d4.1\uff0b6.1\uff0d5.9
5.6\u00f73.5 9.6\u00f70.8\u00f70.4 4.2\u00d799\uff0b4.2
17.8\u00f7(1.78\u00d74) 0.49\u00f71.4 1.25\u00d72.5\u00d732 3.65\u00d710.1
15.2\u00f70.25\u00f74 0.89\u00d7100.1 146.5\uff0d(23\uff0b46.5)
3.83\u00d74.56\uff0b3.83\u00d75.44 4.36\u00d712.5\u00d78 9.7\u00d799\uff0b9.7
27.5\u00d73.7\uff0d7.5\u00d73.7 8.54\u00f72.5\u00f70.4 0.65\u00d7101 3.2\u00d70.25\u00d712.5
(45.9\uff0d32.7)\u00f78\u00f70.125 3.14\u00d70.68\uff0b31.4\u00d70.032 5.6\u00f71.25\u00f70.8\u00f72.5\u00f70.4
7.2\u00d70.2\uff0b2.4\u00d71.4 8.9\u00d71.01 7.74\u00d7\uff082.8\uff0d1.3\uff09\uff0b1.5\u00d72.26
3.9\u00d72.7\uff0b3.9\u00d77.3 18\uff0d1.8\u00f70.125\u00f70.8 12.7\u00d79.9\uff0b1.27
21\u00d7\uff089.3\uff0d3.7\uff09\uff0d5.6 15.02-6.8-1.02 5.4\u00d711-5.4
2.3\u00d716+2.3\u00d723+2.3 9.43-\uff086.28-1.57\uff09 3.65\u00d74.7\uff0d36.5\u00d70.37
46\u00d757\uff0b23\u00d786 13.7\u00d70.25\uff0d3.7\u00f74 2.22\u00d79.9+6.66\u00d76.7
101\u00d70.87-0.91\u00d787 10.7\u00d716.1-15.1\u00d710.7 0.79\u00d7199
4.8+8.63+5.2+0.37 5.93+0.19+2.81 1.76+0.195+3.24
2.35+1.713+0.287+7.65 1.57+0.245+7.43 6.02+3.6+1.98
0.134+2.66+0.866 1.27+3.9+0.73+16.1 7.5\uff0b4.9\uff0d6.5
3.07\uff0d0.38\uff0d1.62 1.29\uff0b3.7\uff0b2.71\uff0b6.3 8\uff0d2.45\uff0d1.55
3.25\uff0b1.79\uff0d0.59\uff0b1.75 23.4\uff0d0.8\uff0d13.4\uff0d7.2 0.32\u00d7403
3.2\uff0b0.36\uff0b4.8\uff0b1.64 1.23\uff0b3.4\uff0d0.23\uff0b6.6 0.25\u00d736
12.7\uff0d\uff083.7\uff0b0.84\uff09 36.54\uff0d1.76\uff0d4.54 0.25\u00d70.73\u00d74
7.6\u00d70.8\uff0b0.2\u00d77.6 0.85\u00d7199 0.25\u00d78.5\u00d74
1.28\u00d78.6\uff0b0.72\u00d78.6 12.5\u00d70.96\u00d70.8 10.4\uff0d9.6\u00d70.35
0.8\u00d7\uff084.3\u00d71.25\uff09 3.12\uff0b3.12\u00d799 28.6\u00d7101\uff0d28.6
0.86\u00d715.7\uff0d0.86\u00d714.7 2.4\u00d7102 2.31\u00d71.2\u00d70.5
14\uff0d7.32\uff0d2.68 2.64\uff0b8.67\uff0b7.36\uff0b11.33 70\u00f728
\uff082.5\uff0d0.25\uff09\u00d70.4 9.16\u00d71.5\uff0d0.5\u00d79.16 3.6\uff0d3.6\u00d70.5
4.5\u00f71.8 4.2\u00f73.5 930\u00f70.6\u00f75
63.4\u00f72.5\u00f70.4 4.9\u00f71.4 3.9\u00f7\uff081.3\u00d75\uff09
\uff087.7\uff0b1.54\uff09\u00f70.7 2.5\u00d72.4 2.7\u00f745 15\u00f7\uff080.15\u00d70.4\uff09
0.35\u00d71.25\u00d72\u00d70.8 32.4\u00d70.9\uff0b0.1\u00d732.4 15\u00f70.25
3/7 \u00d7 49/9 - 4/3
8/9 \u00d7 15/36 + 1/27
12\u00d7 5/6 \u2013 2/9 \u00d73
8\u00d7 5/4 + 1/4
6\u00f7 3/8 \u2013 3/8 \u00f76
4/7 \u00d7 5/9 + 3/7 \u00d7 5/9
5/2 -\uff08 3/2 + 4/5 \uff09
7/8 + \uff08 1/8 + 1/9 \uff09
9 \u00d7 5/6 + 5/6
3/4 \u00d7 8/9 - 1/3
11. 7 \u00d7 5/49 + 3/14
12. 6 \u00d7\uff08 1/2 + 2/3 \uff09
13. 8 \u00d7 4/5 + 8 \u00d7 11/5
14. 31 \u00d7 5/6 \u2013 5/6
15. 9/7 - \uff08 2/7 \u2013 10/21 \uff09
16. 5/9 \u00d7 18 \u2013 14 \u00d7 2/7
17. 4/5 \u00d7 25/16 + 2/3 \u00d7 3/4
18. 14 \u00d7 8/7 \u2013 5/6 \u00d7 12/15
19. 17/32 \u2013 3/4 \u00d7 9/24
20. 3 \u00d7 2/9 + 1/3
21. 5/7 \u00d7 3/25 + 3/7
22. 3/14 \u00d7\u00d7 2/3 + 1/6
23. 1/5 \u00d7 2/3 + 5/6
24. 9/22 + 1/11 \u00f7 1/2
25. 5/3 \u00d7 11/5 + 4/3
26. 45 \u00d7 2/3 + 1/3 \u00d7 15
27. 7/19 + 12/19 \u00d7 5/6
28. 1/4 + 3/4 \u00f7 2/3
29. 8/7 \u00d7 21/16 + 1/2
30. 101 \u00d7 1/5 \u2013 1/5 \u00d7 21
31.50\uff0b160\u00f740
32.120-144\u00f718+35
33.347+45\u00d72-4160\u00f752
34\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
35.95\u00f7\uff0864-45\uff09
36.178-145\u00f75\u00d76+42
37.812-700\u00f7\uff089+31\u00d711\uff09
38.85+14\u00d7\uff0814+208\u00f726\uff09
39.\uff08284+16\uff09\u00d7\uff08512-8208\u00f718\uff09
40.120-36\u00d74\u00f718+35
41.\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
42.(6.8-6.8\u00d70.55)\u00f78.5
43.0.12\u00d7 4.8\u00f70.12\u00d74.8
44.\uff083.2\u00d71.5+2.5\uff09\u00f71.6 \uff082\uff093.2\u00d7\uff081.5+2.5\uff09\u00f71.6
45.6-1.6\u00f74= 5.38+7.85-5.37=
46.7.2\u00f70.8-1.2\u00d75= 6-1.19\u00d73-0.43=
47.6.5\u00d7\uff084.8-1.2\u00d74\uff09= 0.68\u00d71.9+0.32\u00d71.9
48.10.15-10.75\u00d70.4-5.7
49.5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
50.32.52-\uff086+9.728\u00f73.2\uff09\u00d72.
51.\uff08136+64\uff09\u00d7\uff0865-345\u00f723\uff09
52. 420+580-64\u00d721\u00f728
53.\uff0858+370\uff09\u00f7\uff0864-45\uff09
54.6.9\uff0b4.8\uff0b3.1 0.456\uff0b6.22\uff0b3.78 15.89\uff0b(6.75\uff0d5.8\uff09*6
55.4.02\uff0b5.4\uff0b0.98 5.17\uff0d1.8\uff0d3.2 13.75\uff0d(3.75\uff0b6.48)*6
1. 1-2+3-4+5-6+7-8+9-10+11-12+................+2003-2004+2005-2006+2007
=1+（3-2）+（5-4）+.........+（2007-2006）
=1+（2007-1）/2
=1005
2、480+325+75
=480+(325+75)
=480+400
=880
3、295-128-72
=295+（128+72）
=295+200
=495
4、43×25×4
=43×（25×4）
=43×100
=4300
5、102×43
=（100+2）×43
=100×43+2×43
=4300+86
=4386
6、9×37+9×63
=9×（63+37）
=9×100
=900
7.66×38-987÷21 66×38-987÷21
=2508-987÷21 =2508-47
=2508-47 =2461
=2461
8.1.25*17.6+36.1/0.8+2.36*12.5
1.25*17.6+36.1/0.8+2.36*12.5
=(5/4)*17.6+36.1*(5/4)+23.6*(50/4)
=176/8+361/8+236/8
=773/8=96.625
9.7.5*2.3+1.9*2.5
7.5*2.3+1.9*2.5
=7.5*(1.9+0.4)+1.9*2.5
=(7.5+2.5)*1.9+7.5*0.4
=19+3 =22
10.2004/2003*2005
2004/2003*2005
=(2004/2003)*(2003+2)
=2004+4008/2003
11.276*543-267/276+543*275
276*543-267/276+543*275
=543*(276+275)-267/276
=543*551-267/276
12.2002+2001-2000-1999+1998+1997-1996-1995+……+2+1
=(2002-2000)+(2001-1999)+(1998-1996)+(1997-1995)+……+(6-4)+(5-3)+2+1
=2+2+2+2+……+2+2(从3-2002共2000个数，所以有1000个2)+2+1
=1000×2+2+1
=2003
13.1/3+1/15++1/35+1/63+九十1/9
=1/(1×3)+1/(3×5)+1/(5×7)+1/(7×9)+1/(9×11)
=1/2×(1-1/3)+1/2×(1/3-1/5)+1/2×(1/5-1/7)+1/2×(1/7-1/9)+1/2×(1/9-1/11)
=1/2×(1 - 1/3 + 1/3 - 1/5 + 1/5 - 1/7 + 1/7 - 1/9 + 1/9 - 1/11)
=1/2×(1-1/11)
=1/2×10/11
=5/11
14.0.49÷1.4 1.25×2.5×32 3.6－0.6×2
15.3.65×10.1 3.6－3.6×0.8 15.2÷0.25÷4
16.5.6÷3.5 9.6÷0.8÷0.4 4.2×99＋4.2
17.0.89×100.1 146.5－(23＋46.5) 17.8÷(1.78×4)
18.5.83×2＋4.27 (45.9－32.7)÷8÷0.125 9.7×99＋9.7
19.4.36×12.5×8 15.6×13.1－15.6－15.6×2.1 0.65×101
20.27.5×3.7－7.5×3.7 8.54÷2.5÷0.4 3.83×4.56＋3.83×5.44
21.9.9×0.625×101－62.5
22.9.9×8.6＋0.86
23.0. 46×7.5＋0. 46×2. 5
24.4.6×8.04＋6.4×8.04－8.04
25.5.4×0.15÷0.2+4.6×0.15
=27*0.15+4.6*0.15
=(27+4.6)*0.15
=31.6*0.15
=4.74
26.55×10.43+104.3×4.4+104.3×0.1
=55×10.43+10.43×44+10.43×1
=(55+44+1)*10.43
=100*10.43
=1043
绛旓細鎸夌収杩愮畻椤哄簭鎶婅绠楄繃绋嬩緷娆＄敤绛夊紡琛ㄧず鍑烘潵銆傦紙1锛485 - ( 6 脳 4 + 32 )= 485 - ( 24 + 32 )= 485 - 56 = 429 锛2锛1000 - ( 500 + 499 + 1 )= 1000 - 1000 = 0 锛3锛3651 脳 { 452 - [ 52 + ( 500 - 100 ) ] } = 3651 脳 { 452 - [ 52 + 400 ] } =...
绛旓細58脳58锛58脳42 3874锛嶏紙874锛1000锛 95脳102 360梅45 329锛38锛62 347锛129锛147 6000梅125梅8 25脳125脳32 44脳25 591锛482锛118 99脳I26 4600梅25梅4 125脳15脳8 986+1999 473+79-63 136脳101-136 ...
绛旓細宸х畻杩囩▼瑙ｆ瀽0.25脳360 瑙ｉ鎬濊矾:鍥涘垯杩愮畻瑙勫垯(鎸夐『搴忚绠,鍏堢畻涔橀櫎鍚庣畻鍔犲噺,鏈夋嫭鍙峰厛绠楁嫭鍙,鏈変箻鏂瑰厛绠椾箻鏂)鍗宠劚寮忚繍绠(閫掔瓑寮忚绠)闇鍦ㄨ鍘熷垯鍓嶆彁涓嬭繘琛 瑙ｉ杩囩▼:0.25脳360 =0.25脳40脳9 =10脳9 =90
绛旓細灏忔暟涔橀櫎娉绠渚璁＄畻涓撻」缁冧範 1.25脳32脳0.25 4.7脳1.25脳1.6 2.5脳锛13脳4锛1.25脳88 1.25脳64脳0.25 4.6脳0.35+4.6脳0.65 0.95脳8.6-7.6脳0.95 2.4脳1.87-2.4脳0.87 4.18+4.18脳99 2.55脳1.5+1.5+6.45脳1.5 2.95脳101-2.95 2.4-2.4脳0.5 3....
绛旓細2.5脳7.1脳4 16.12脳99锛16.12 5.2脳0.9锛0.9 7.28脳99+7.28 4.3脳50脳0.2 64锛2.64脳0.5 26脳15.7锛15.7脳24 (2.275 锛0.625)脳0.28 3.94+34.3脳0.2 1.2脳(9.6梅2.4)梅4.8 8.9脳1.1脳4.7 2.7脳5.4脳3.9 3.6脳9.85-5.46 8.05脳3.4+7....
绛旓細38.14-5.86-4.14 =(38.14-4.14)-5.86 =34-5.86 =28.14 4.587+3.47-2.47 =4.587+(3.47-2.47)=4.587+1 =5.587 24.62-(4.63-1.85)=24.62-4.63+1.85 (杩欓鏄笉鏄啓閿欎簡锛屽簲璇ユ槸24.63鍚э紵濡傛灉涓嶆槸閭ｈ繕鐪熶笉鐭ラ亾鎬庝箞绠绠渚浜嗭級...
绛旓細灏忓鍥涘勾绾ч绛夊紡璁＄畻300閬,瓒婂瓒婂ソ,楂樺垎!!! 鏈濂芥槸鍥涘勾绾т笅鐨勬按骞,瑕佽澶氶亾閬,璋佸鎴戦噰绾宠皝!!!瑕侀掔瓑寮!!!璇蜂笉瑕佸啓澶毦鐨,涔熶笉瑕佸啓澶畝鍗曠殑,濂藉悧?... 鏈濂芥槸鍥涘勾绾т笅鐨勬按骞,瑕佽澶氶亾閬,璋佸鎴戦噰绾宠皝!!!瑕侀掔瓑寮!!!璇蜂笉瑕佸啓澶毦鐨,涔熶笉瑕佸啓澶畝鍗曠殑,濂藉悧? 灞曞紑 ...
绛旓細涓锛氭妸4.8鍒嗘垚4锛0.8銆備簩锛氭墦寮鎷彿锛屾妸灏忔暟鐐瑰悗闈㈢浉鍚岀殑鐩稿姞鍑
绛旓細杩欓亾棰樺彲浠绠渚杩愮畻锛岃繍鐢ㄥ洓鍒欒繍绠楁硶鍒欙紝鍏堟暣鍚堢浉鍚岄」9.3,灏93*94鍙樻垚9.3*10*94=9.3*940锛屽啀鍒嗘璁＄畻锛屽嵆:9.3*193-93*94+9.3=9.3*193+9.3*1-93*94=9.3(193+1)-9.3*10*94=9.3*194-9.3*940 =9.3(194-940)=-746*9.3=-6937.8 璋㈣阿 ...
绛旓細216+305 25脳32 47+236+64 6脳(15脳9) 402+359 43+78+122+257 25脳(26脳4) 25脳44 354+(229+46)(1)9.26-4.38-2.62 (2)9.26-(4.38+2.26)(3)9.26-(4.38-2.74 (1)4.75-9.64+8.25-1.36 (2)14.529+(2.471-3)(3)38.68-(4.7-2.32)415-176-24 8.29+...
