选择最适合的方法,写出递等式计算的过程 39.6-6.53+3.47. 0.0125×32×0.25. [90-(8.25÷0.6+1
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解决时间 2021-01-21 15:54
- 提问者网友:龅牙恐龙妹
- 2021-01-21 05:40
选择最适合的方法,写出递等式计算的过程 39.6-6.53+3.47. 0.0125×32×0.25. [90-(8.25÷0.6+1
最佳答案
- 五星知识达人网友:怀裏藏嬌
- 2021-01-21 06:12
(1)39.6-6.53+3.47, =33.07+3.47, =36.54; (2)0.0125×32×0.25, =0.0125×8×4×0.25, =(0.0125×8)×(4×0.25), =0.1×1, =0.1; (3)[90-(8.25÷0.6+1.25)]×0.01, =[90-(13.75+1.25)]×0.01, =[90-15]×0.01, =75×0.01, =0.75; (4)38×2.5+76+38×5.5, =38×2.5+38×2+38×5.5, =38×(2.5+2+5.5), =38×10, =380; (5)3.6×31.4+43.9×6.4, =113.04+280.96, =394; (6)5.7×5.7+5.7×4.2+5.7×0.1, =5.7×(5.7+4.2+0.1), =5.7×10, =57. |
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