题目内容
| 计算,能简算得写出过程。 | ||||||
|
|
(1)7.5× |
(2)3.5× =3.5×0.8+5.5×0.8+0.8 =0.8×(3.5+5.5+1) =0.8×10 =8 |
| (3)24×[(1 =24×[(1 =24×[ =24× =84 |
(4)12﹣1÷4﹣ =12﹣( =12﹣(1+7)× =12﹣8× =10 |
| (5)( =( = = =1.5﹣1.5 =0 |
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题目内容
| 计算,能简算得写出过程。 | ||||||
|
|
(1)7.5× |
(2)3.5× =3.5×0.8+5.5×0.8+0.8 =0.8×(3.5+5.5+1) =0.8×10 =8 |
| (3)24×[(1 =24×[(1 =24×[ =24× =84 |
(4)12﹣1÷4﹣ =12﹣( =12﹣(1+7)× =12﹣8× =10 |
| (5)( =( = = =1.5﹣1.5 =0 |