(1)7.8×9.8-14.5,=76.44-14.5,=61.94;(2)13.4+
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/21 08:52:29
(1)7.8×9.8-14.5,
=76.44-14.5, =61.94; (2)13.4+5.62+17.6+4.38, =(13.4+17.6)+(5.62+4.38), =31+10, =41; (3)3.6×42+4.2×64, =36×4.2+4.2×64, =4.2×(36+64), =4.2×100, =420; (4)4.8×12.5×0.8, =4.8×(12.5×0.8), =4.8×10, =48; (5)1.76-[(0.74+0.26)÷0.8], =1.76-[1÷0.8], =1.76-1.25, =0.51; (6)(1.89+1.4×3)÷0.25, =(1.89+4.2)÷0.25, =6.09÷0.25, =24.36.
计算下面各题.(能简算的要简便计算) 7.8×9.8-14.5 13.4+5.62+17.6+4.38 3.6×42+4
1、3.5X-14.5=3.X
3.5x-14.5=3.
14.5公顷=多少平方米
x×(1+35%)-x×(1+6%)=14.5
double num[] = {10.1,11.2,12.3,13.4,14.5};小数点后面就一位, 为什么要设置成d
简算7.4*9.8—14.5
2x加4.5乘3=14.5 求未知数
3.5x-14.5=3.5-x解方程,要验算(不要跳步骤!)
-100×8分之1-0.125×35.5+14.5×(-12.5%)
(28-X)=(14.5+X)×1.
3.5x-14.5-3.5=x
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