2019年小学数学五年级上册简便计算练习.doc

2019年小学数学五年级上册简便计算练习请用简便方法计算下列各题3.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.57.325-3.29-3.3257.325-(5.325+1.7)7.325-(5.325-1.7)3.29+0.73-2.29+2.27 3.290.254 0.1258.8 0.250.28 0.1253.22.5 3540.2 0.2540.254 3.59.9 3.599+3.5 3.5101-3.5 3.59.9+3.50.1 3.52.7+350.733.52.7-3.50.7 (32+5.6)0.8 3.50.6-0.50.64.93.5 70.254 70.125 7.35(7.350.25) 7.35(7.350.25) 3.070.381.62 1.293.72.716.3 82.451.55 3.251.790.591.75 23.40.813.47.2 0.324033.20.364.81.641.233.40.236.6 0.253612.7（3.70.84） 36.541.764.54 0.250.7347.60.80.27.6 0.85199 0.258.54 1.288.60.728.612.50.960.810.49.60.350.8（4.31.25）3.123.1299 28.610128.6（4.236.17）0.8 0.8615.70.8614.7 2.4102147.322.682.648.677.3611.33 2.311.20.5（2.50.25）0.4 9.161.50.59.16 3.63.60.54.51.8 4.23.5 9300.65 63.42.50.4 4.91.4 3.9（1.35） （7.71.54）0.7 2.52.4 2.745 0.351.2520.8 32.40.90.132.4 150.257028 15（0.150.4） 4.252.59.90.173.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.57.325-3.29-3.325 7.325-(5.325+1.7) 7.325-(5.325-1.7) 3.29+0.73-2.29+2.27 3.290.254 0.1258.8 0.250.28 0.1253.22.5 3540.2 0.2540.254 3.59.9 3.599+3.5 3.5101-3.5 3.59.9+3.50.1 3.52.7+350.733.52.7-3.50.7 (32+5.6)0.8 3.50.6-0.50.64.93.5 70.254 70.125 7.35(7.350.25) 7.35(7.350.25) 3.070.381.62 1.293.72.716.3 82.451.553.251.790.591.75 23.40.813.47.20.32403 0.2536 0.250.7347.60.80.27.6 0.85199 0.258.54 1.288.60.728.6 12.50.960.8 10.49.60.350.8（4.31.25） 3.123.1299 28.610128.6（4.236.17）0.8 0.8615.70.8614.7 2.4102（2.50.25）0.4 9.161.50.59.16 3.63.60.54.51.8 4.23.5 9300.65 63.42.50.4 4.91.4 3.9（1.35） （7.71.54）0.7 2.52.4 2.745 0.351.2520.8 32.40.90.132.4 150.257028 15（0.150.4） 4.252.59.90.17附送：2019年小学数学五年级上册简便计算练习题归类集锦 (I)一、当一个计算题只有同一级运算（只有乘除或只有加减运算）又没有括号时，我们可以“带符号搬家”。(a+b+c=a+c+b, a+b-c=a-c+b, a-b+c=a+c-b, a-b-c=a-c-b; abc=acb, abc=acb , abc=acb, abc=acb,)12.065.072.94 30.349.7610.3433 25743441.7 1.25250.81027.35.1 +15- +7.5+2.5-7.5+2.5二A、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。a+b+c=a+ (b + c ), a+b-c=a +(b-c), a-b+c=a (b-c), a-b-c= a-( b +c)933-15.7-4.3 41.0619.7220.287.325-(5.325+1.7) 3.29-0.73-2.27 7.325-(5.325+1.7) 7.325-(5.325-1.7)3.29+0.73-2.29+2.27B、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。abc=a(bc), abc=a(bc), abc=a(bc) , abc=a(bc),700145 18.62.50.41.960.54 1.062.5470.254 70.125 8 3.9（1.35） 三A、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。（现在没有括号了，可以带符号搬家了哈)a+ (b + c )= a+b+c a +(b-c)= a+b-ca (b-c)= a-b+c a-( b +c)= a-b-c;19.68（2.682.97） 5.68（5.394.32）19.68（2.979.68） B、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。（现在没有括号了，可以带符号搬家了哈)a(bc) = abc, a(bc) = abc,a(bc) = abc , a(bc) = abc,1.25（ 8 0.5） 0.25（ 4 1.2）1.25（ 2130.8） 7.35(7.350.25) 7.35(7.350.25) 四、乘法分配律的两种典型类型A,、括号里是加或减运算，与另一个数相乘，注意分配(32+5.6)0.8 （2.50.25）0.4（7.71.54）0.7B、注意相同因数的提取。0.921.410.928.59 0.8615.70.8614.71.311.61.61.3 11.618.43.59.9+3.50.1 3.52.7+350.733.52.7-3.50.7 3.50.6-0.50.632.40.90.132.47.60.80.27.69.161.50.59.16五、一些简算小技巧A、巧借，可要注意还哦 ,有借有还，再借不难蛮。9999+999+99+9 4821-998B、分拆，可不要改变数的大小哦3.212.525 1.2588 3.60.25C/注意构造，让我们的算式满足乘法分配律的条件1.8991.8 3.89.90.38 2.69.91.019.6 1020.87 3.5101-3.5 3.59.9 3.599+3.5 13.527+13.572+13.5 0.6710.16.7 3.63.60.5 0.851990.258.54 28.610128.6 2.41020.2536 0.1253.22.5 3540.22.311.20.5 150.25 2.52.4 3540.20.1258.8 0.250.28 0.1253.22.52821.62.816 5.61.70.5683请用简便方法计算下列各题0.2540.254 4.93.5 3.29+0.73+2.27 2.745 7.325-3.29-3.325 0.351.2520.8 3.290.254 63.42.50.4 4.91.4 147.322.68 2.648.677.3611.330.250.28 0.1253.22.5 3540.23.59.9+3.50.1 0.2540.254 3.59.93.599+3.5 3.5101-3.5 3.52.7+3.50.733.52.7-3.50.7 （32+5.6）0.8 3.50.6-0.50.60.258.54 12.50.960.8 0.250.7344.361.258 0.2516.24 1.252.53270.1258 7.325-3.29-3.325 2.229.9+6.666.73.20.2512.5 0.2536 （1.25-0.125）84.810.1 3.6102 0.39 199 0.32 4033.65 10.1 0.85 9.9 3.72 3.5+6.28 3.515.6 2.1-15.6 1.1 3.83 4.56+3.83 5.44 9.799+9.756.599+56.5 7.0910.8-0.87.09 4657+2386 9.799+9.7 4.299+4.2 27.53.7-7.53.73.29+0.73+2.273.29-0.73-2.277.5+2.5-7.5+2.53.92.7+3.97.3 6.663.3+6.666.7 7.20.2+2.4