题目内容
能简便就简便
3
×7.4-3
+3.6×3.125
10
-(8.8-
)+
14.4÷0.6-4.2×3.
3
| 1 |
| 8 |
| 1 |
| 8 |
10
| 4 |
| 5 |
| 5 |
| 7 |
| 2 |
| 7 |
14.4÷0.6-4.2×3.
(1)3
×7.4-3
+3.6×3.125
=3.125×7.4-3.125+3.6×3.125,
=(7.4+3.6-1)×3.125,
=10×3.125,
=31.25;
(2)10
-(8.8-
)+
=10.8-8.8+(
+
),
=2+1,
=3;
(3)14.4÷0.6-4.2×3
=24-12.6,
=11.4.
| 1 |
| 8 |
| 1 |
| 8 |
=3.125×7.4-3.125+3.6×3.125,
=(7.4+3.6-1)×3.125,
=10×3.125,
=31.25;
(2)10
| 4 |
| 5 |
| 5 |
| 7 |
| 2 |
| 7 |
=10.8-8.8+(
| 5 |
| 7 |
| 2 |
| 7 |
=2+1,
=3;
(3)14.4÷0.6-4.2×3
=24-12.6,
=11.4.
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