五年级上册数学简便计算练习题及答案精编.pdf

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1、五年级上册简便运算练习题及答案五年级上册简便运算练习题及答案请用简便方法计算下列各题0.250.20.1253.22.53540.20.2540.254.59.93.599+3.53.5101-3.53.53.52.7-3.50.74.93.57.35.353.29+0.73+2.273.29-0.73-2.2.5+2.5-7.5+2.57.325-3.29-3.32.325-7.325-9.9+3.50.1.50.50.257.325-2.7+350.70.6-0.50.0.1283.29+0.73-2.29+2.23.290.250.1258.863.42.50.91.4.90.70.35

2、1.2520.828.610128.6147.322.62.640.47.60.80.27.60.25362.52.432.40.90.132.40.8615.70.8614.78.677.3611.39.161.50.59.163.60.85193.22.552.745150.252.4102.311.20.53.60.0.258.5440.20.125五年级数学简便计算练习卷四7.60.80.27.60.85190.258.541.288.60.728.12.50.960.810.49.60.350.83.123.129928.610128.60.8615.70.8614.4102.311

3、.20.5147.322.62.648.677.3611.30280.49.161.50.59.163.63.60.54.51.23.300.6563.42.50.4.91.4.90.72.52.7150.351.2520.82.40.90.132.150.25五年级数学简便计算练习卷三465723813.70.253.7.229.9+6.666.71010.87-0.91810.716.1-15.110.70.791994.8+8.63+5.2+0.5.93+0.19+2.81 1.76+0.195+3.242.35+1.713+0.287+7.61.57+0.245+7.6.02+3.6+

4、1.980.134+2.66+0.8661.27+3.9+0.73+16.1.54.96.53.070.381.1.293.72.716.82.451.553.251.790.591.7523.40.813.47.0.324033.20.364.81.61.233.40.236.60.253612.76.541.764.540.250.734五年级数学简便计算练习卷二18.769.918.763.522.50.4.94.16.15.95.63.9.60.80.2994.217.80.491.1.252.5323.6510.115.20.2540.89100.1 146.53.834.563.8

5、35.444.3612.589.7999.727.53.77.53.78.542.50.0.65101.20.2512.580.1253.140.6831.40.032.61.250.82.50.47.20.22.41.91.01.741.52.263.92.73.97.3181.80.1250.12.79.91.27215.615.02-6.8-1.025.411-5.42.316+2.323+2.43-.654.736.50.37五年级数学简便计算练习卷一下面各题怎样算简便就怎样算.6.94.83.1 0.4566.223.715.894.025.40.9.171.83.213.753.6

6、87.562.6.852.340.854.6635.61.815.67.23.822.90.189.1.64.83.140.532.475.272.860.661.13.354.682.65.81.6413.85.3647.87.45+8.80.398+0.36+3.6415.75+3.590.59+14.2566.868.661.3 0.2516.283.61023.723.56.283.536.83.96.115.613.115.615.62.14.87.8780.5224.90.94.8100.16.59.956.0910.80.87.0925.48.23.53201.258小学五年级上

7、数学简便运算归类练习明确三点：1、一般情况下；四则运算的计算顺序是：有括号时；先算；没有括号时；先算；再算；只有同一级运算时；从左往右.2、由于有的计算题具有它自身的特征；这时运用运算定律；可以使计算过程简单；同时又不容易出错.加法交换律：a+b=b+a加法结合律：+c=a+乘法交换律：ab=ba乘法结合律：c=a乘法分配律：c=ac+bc3、注意；对于同一个计算题；用简便方法计算；与不用简便方法计算得到的结果相同.我们可以用两种计算方法得到的结果对比；检验我们的计算是否正确.一、变换位置当一个计算题只有同一级运算又没有括号时；我们可以带符号搬家.a+b+c=a+c+ba+b-c=a-c+ba

8、-b+c=a+c-ba-b-c=a-c-babc=acb abc=acb abc=acbabc=acb 根据：加法交换律和乘法交换律12.065.072.91773+1747730.3410.29.6625743441.71027.35.112523731953795二加括号1、当一个计算题只有加减运算又没有括号时；我们可以在加号后面直接添括号；括到括号里的运算原来是加还是加；是减还是减.但是在减号后面添括号时；括到括号里的运算；原来是加；现在就要变为减；原来是减；现在就要变为加.根据加法结合律a+b+c=a+,a+b-c=a+,a-b+c=a,a-b-c=a-1132+752+35874+2

9、95952383+81.0619.7220.282、当一个计算题只有乘除运算又没有括号时；我们可以在乘号后面直接添括号；括到括号里的运算；原来是乘还是乘；是除还是除.但是在除号后面添括号时；括到括号里的运算；原来是乘；现在就要变为除；原来是除；现在就要变为乘.根据乘法结合律abc=a,abc=a,abc=a,abc=a,1.062.54170.60.18.62.50.400142三去括号1、当一个计算题只有加减运算又有括号时；我们可以将加号后面的括号直接去掉；原来是加现在还是加；是减还是减.但是将减号后面的括号去掉时；原来括号里的加；现在要变为减；原来是减；现在就要变为加.a+=a+b+c a

10、+=a+b-c a-=a-b+c a-=a-b-c5.68 172+76 19.682、当一个计算题只有乘除运算又有括号时；我们可以将乘号后面的括号直接去掉；原来是乘还是乘；是除还是除.但是将除号后面的括号去掉时；原来括号里的乘；现在就要变为除；原来是除；现在就要变为乘.a=abca=abca=abca=abc0.25 1.2541.25四、乘法分配律的两种典型类型1、括号里是加或减运算；与另一个数相乘；注意分配212562486 152、注意相同因数的提取.0.921.410.928.51.311.61.61.3五、一些简算小技巧1、巧 借；可 要 注 意 还 哦 有 借 有 还；再 借 不 难 嘛.9999+999+99+921-9982、分拆；可不要改变数的大小哦3.212.51.25883.60.253、注意构造；让算式满足乘法分配律的条件.3.89.90.382.69.9983.27+6.541012.172.170.2516.2.61023.723.5+6.283.515.62.115.61.1.810.156.599+56.51.252.5327.0910.80.87.09.834.56+3.835.44.3612.58