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简便计算题大全五年级

1、24.6-3.98+5.4-6.02 解析:此题利用加法交换结合律,凑整再计算.步骤如下:24.6-3.98+5.4-6.02=(24.6+5.4)-(3.98+6.02)=30-10=202、27*17/26 解析:此题先用加法分配律,把27转换成(26+1),再利用乘法结合律,使得运算简便.27*

(1)2.5*32*0.125=(2.5*4)*(8*0.125)=10*1=10 (2)3.5-7+6.5=3.5+6.5-7=3 (3)1.2*2.5+0.8*2.5 =2.5(1.2+0.8)=25 (4)8.9*1.25-0.9*1.25 =1.25(8.9-0.9)=10 (5)12.5*7.4*0.8 =12.5*0.8*7.4=74 (6)6.5*9.5+6.5*0.5 =6.5*(9.5+0.5)=6.5*10=65 (7)0.35*1.6+0.

课标实验教材五年级下册 单元测试题 数学广角 一、直接写得数. 1-5/7= 1/9+7/9= 1/3+5/8+2/3= 5/6-1/6= 13/15-2/5= 1/5-1/6= 1/4+1/3= 1-1/10-7/10= 3-1.28= 2.21+1.79= 25*8= 420÷7÷6= 二、想一想,填一填. 1、有5瓶多种维生素,其中一瓶少

1. 3/7 * 49/9 - 4/3 =2. 8/9 * 15/36 + 1/27 =3. 12* 5/6 2/9 *3 =4. 8* 5/4 + 1/4 =5. 6÷ 3/8 3/8 ÷6 =6. 4/7 * 5/9 + 3/7 * 5/9 =7. 5/2 -( 3/2 + 4/5 ) =8. 7/8 + ( 1/8 + 1/9 ) =9. 9 * 5/6 + 5/6 =10. 3/4 * 8/9 - 1/3 =11. 7 * 5/49 + 3/14 =12. 6 *( 1/2 + 2/3 ) =13. 8 *

0.25*0.28 0.125*3.2*2.5 35*40.2 0.25*4÷0.25*4 3.5*9.9 3.5*99+3.5 3.5*101-3.5 3.5*9.9+3.5*0.1 3.5*2.7+35*0.733.5*2.7-3.5*0.7 (32+5.6)÷0.8 3.5÷0.6-0.5÷0.64.9÷3.5 7÷0.25÷4 7÷0.125 ÷8

102*4.5 7.8*6.9+2.2*6.9 5.6*0.25 8*(20-1.25) 1)127+352+73+44 (2)89+276+135+33 (1)25+71+75+29 +88 (2)243+89+111+57 9405-2940÷28*21 920-1680÷40÷7 690+47*52-398 148+3328÷64-75 360*24÷32+730 2100-94+48*54 51+(2304-

五年级上册简便算法题10÷3.14-6.86÷3.1437.68÷0.25÷43.75-(2.75-1.3)37.56-(18+7.56) 0.77÷144.5*9.80.7÷0.1250.7÷0.252.5*3.2*12.512.5*9.6*0.25 3.75-(2.8-1.25)37.65÷0.4÷0.253.125÷8÷0.12537.65-4.75-3.2525*6.4*12.53.6*0.25 答案10÷3.14

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