题目内容
能简算的要简算.
32×(1-40%)
12×
÷(1-80%)
8×75%-3÷
-
.
32×(1-40%)
12×
| 1 |
| 3 |
8×75%-3÷
| 4 |
| 3 |
| 3 |
| 4 |
(1)32×(1-40%)
=32×(1-0.4)
=32×0.6
=19.2;
(2)12×
÷(1-80%)
=4÷(1-0.8)
=4÷0.2
=20;
(3)8×75%-3÷
-
=8×
-3×
-
=(8-3-1)×
=4×
=3.
=32×(1-0.4)
=32×0.6
=19.2;
(2)12×
| 1 |
| 3 |
=4÷(1-0.8)
=4÷0.2
=20;
(3)8×75%-3÷
| 4 |
| 3 |
| 3 |
| 4 |
=8×
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
=(8-3-1)×
| 3 |
| 4 |
=4×
| 3 |
| 4 |
=3.
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