简便计算题强化训练

1、简便方法计算强化训练题158+262+138375+219+381+225（181+2564）+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+10172214+638+28699+999+9999+99999899+344891011113999+498278+463+22+37732+580+2681034+780320+102（181+2564）+2719425+14+1863682649135124127476573999999999（两法）（7861）3930009994002731274

2、42103142901-99500124710212327755(2187+755)3065738106549729923571833173572365108621418833982356（1356721）1235（17801665）273-73-272100-728-772847-527-2731200-624-76455-（155+230）214-（86+14）787-（87-29）365-（65+118）576-285+85825-657+57690-177+77968-599363-1994421031424002731272356（1356721）327（96127）70082183

3、27（96127）37420522695（7861）39374205226951235（17801665）122588125（两法）7524138254(13125)(38)253212550(344)3125328721257212525（784）675212564125258425（784）67522536（两法）9949997510290199935499+3547298624445518454999999545(12+24+80)5032(25+125)8436+64841027658981781011787942+79+79577599+275831028329819917899+1

4、7825（24+16）4(2565+2528)7527+1925996484101(300+6)1225(4+8) 5042578102252046389999999784+783+7839913+1325+199253216+1432178101-17883102-8321723-23735127-3516-1135375（109-9）456（99+1）7298201316761029935（2512）4562727445699564(2565+2528)125474725201316997721994999125（840）2526497426445499999954599999999199

5、9962444551899993666663329999363333233299772131870+13310 8747087053480025215001251680012012482473002548100475320004004970070031501590001258300012581250255360025464（82）1000（1254）272125(2728)(1258)217610002.1761242512625(124126)252502510175257525(17575)25100254201+202+203+204+1000后面有答案348163242410537(3

6、48242)410(163537)59041070010007001700（555555555）125123181233+85123124386512476110767124(3865) 76(1107)(12476) 103340062343820381434006234(38203814)3400623438203814124386512476110767 199219911991-199119901990 199219911991-199119901990199219911001-199119901001(1992-1990)19911001（246100）-（13599）6666777

7、833334444 4.37 0.28 1.63 5.722.73 0.89 1.274.025.40.98137.5(37.56.48)2.35+1.713+0.287+7.651.27+3.9+0.73+16.10.134+2.66+0.8661.293.72.716.30.4566.223.783.070.381.627.54.96.53.251.790.591.756.94.83.13.20.364.81.641.233.40.236.636.541.764.543.822.90.189.182.451.555.171.83.223.40.813.47.23.687.562.6815.

8、89(6.755.89)7.852.340.854.6635.61.815.67.29.64.83.67.140.532.4773.81.6413.85.3615.75+3.590.59+14.255.272.860.661.6313.354.682.6547.87.45+8.80.398+0.36+3.6466.868.661.3436.83.96.19.3 5.26 2.7410 0.432 2.56813.4（3.45.2）14.9（5.24.9）18.32 5.47 4.3217.29 5.28 6.290.25 32 0.1256.4 1.25 12.525 6.8 0.040.58

9、 10.14.7 9.950.2 993.61023.723.56.283.57.0910.80.87.094.87.8780.52324.90.956.59.95.65 4.8100.1 3201.2583.94.16.15.925.48(9.40.52)146.5(2346.5)3.834.563.835.440.89100.115.20.2544.3612.589.7999.78.542.50.40.6510112.79.91.27 27.53.77.53.7181.80.1250.83.20.2512.57.20.22.41.418 （29）(45.932.7)80.1253.140.

10、6831.40.03291.61.559.168.91.013.92.73.97.3 15.02-6.8-1.0221（9.33.7）5.69.43-（6.28-1.57）2.229.9+6.666.75.411-5.40.791993.654.736.50.372.316+2.323+2.313.70.253.7446572386 10.716.1-15.110.71010.87-0.91875.93+0.19+2.814.8+8.63+5.2+0.371.57+0.245+7.431.76+0.195+3.246.02+3.6+1.983.522.50.418.769.918.7617.8

11、(1.784)0.491.44.2994.29.60.80.44.23.53.6510.15.63.51.252.5320.2516.24(1.250.125)80.324030.250.73412.7（3.70.84）0.851997.60.80.27.60.8（4.31.25）1.288.60.728.63.123.129912.50.960.80.351.2520.828.610128.670280.8615.70.8614.72.4102147.322.682.648.677.3611.33（2.50.25）0.49.161.50.59.163.63.60.59300.654.51.8

12、4.23.50.25360.258.542.1 99 2.13.28 5.7 6.72 5.71.7 9.9 0.1723 0.1 2.3 9.90.18 4.26 0.18 4.260.58 1.3 0.58 1.3 3.75 0.5 2.75 2 7.3 4 2.7 0.25 5.26 0.125 2.74 8 6.3 1.815.613.115.615.62.1 7.74（2.81.3）1.52.264.2 3.589.5 （1.9 8）12.8 （0.4 1.6）930 0.6 563.4 2.5 0.4（7.7 1.54） 0.7（2.7 9.9） 0.96.94.83.115.89

13、(6.755.89)7.852.340.854.6635.61.815.67.213.75(3.756.48)47.87.45+2.5566.868.661.340.2532 0.1252.5 (4 +0.4)(1.250.125)84.2994.8100.156.59.956.55.411-5.43.834.563.835.447.0910.80.87.093.654.736.50.3713.70.253.74 10.716.1-1.110.7 +10.7 54.91.43.9（1.35）63.42.50.4（7.71.4）0.75.61.250.82.50.40.2516.2463.42.

14、50.44.91.42.52.42.7453.9（1.35）150.2515（0.150.4）32.40.90.132.4（7.71.54）0.70.45 201运算定律（右）：容易出错类型（下）：（ab） c = a （bc）abc = a （bc）（a b）c = a （b c）c （a+b）= ca cba b c = a （b c）204204735-352025425498-185+25568568280-804126126175-752525825880-202+6036-366-6369369258（258）100+45-100+451597+3100+1-100+14899+1

15、1000+8-1000+85+9528102+1-102+165+351325+75-25+7540+36020-1013+248672-36+64324-68+32100-36+64600-6015最后告诉你一个技巧（所谓的简便运算，都离不开“运算定律和性质”）1、加法交换律：两个加数交换位置，和不变。这叫做加法交换律。用字母表示：a+b=b+a2、加法结合律：三个数相加，先把前两个数相加，或者先把后两个数相加，和不变。这叫做加法结合律。用字母表示：(a+b)+c= a +( b+c)3、乘法交换律：两个因数交换位置，积不变。这叫做乘法交换律。用字母表示：ab=ba4、乘法结合律：三个数相乘

16、，先把前两个数相乘，或者先把后两个数相乘，积不变。这叫做乘法结合律。用字母表示：(ab)c= a ( bc)5、乘法分配律：两个数的和与一个数相乘，可以先把它们与这个数分别相乘，再相加。这叫做乘法分配律。用字母表示：(a+b)c= ac+bc或a ( b+c) =ab+ac拓展：(a-b)c= ac-bc或a ( b-c)=ab-ac【(ab)c= acbc】6、减法的性质：一个数连续减去两个数，可以减去这两个减数的和。用字母表示： a-b-c= a -( b+c)或a -( b+c) = a-b-c7、一个数连续减去两个数，可以先减去第二个减数，再减去第一个减数。用字母表示：a-b-c= a- c b8、除法的性质：一个数连续除以两个数，可以除以这两个除数的积。用字母表示： abc= a ( bc)或a ( bc) = abc9、一个数连续除以两个数，可以先除以第二个除数，再除以第一个除数。用字母表示：abc= a c b10、商不变性质：在除法里，被除数和除数同时扩大或同时缩小相同的倍数，它们的商不变。用字母表示：a b = (ac) ( bc) 或ab =(a c) ( bc) 【c0】11、差不变性质：