题目内容
简要计算。(写出简算过程)
|
| (1)原式=( =0 |
(2)原式=4.8× =1.8+2-0.8 =3 |
| (3)原式=2.5×40×( =100× =250 |
(4)原式=(5.6+0.4)× =6× =8 |
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题目内容
简要计算。(写出简算过程)
|
| (1)原式=( =0 |
(2)原式=4.8× =1.8+2-0.8 =3 |
| (3)原式=2.5×40×( =100× =250 |
(4)原式=(5.6+0.4)× =6× =8 |