题目内容
脱式计算,能简算的要简算.
(1)496-23×16
(2)2.9×3.6+2.9×6.4
(3)[1-(
+
)]×24.
(1)496-23×16
(2)2.9×3.6+2.9×6.4
(3)[1-(
| 1 |
| 3 |
| 1 |
| 4 |
(1)496-23×16,
=496-368,
=128;
(2)2.9×3.6+2.9×6.4,
=(3.6+6.4)×2.9,
=10×2.9,
=29;
(3)[1-(
+
)]×24,
=[1-
]×24,
=
×24,
=10.
=496-368,
=128;
(2)2.9×3.6+2.9×6.4,
=(3.6+6.4)×2.9,
=10×2.9,
=29;
(3)[1-(
| 1 |
| 3 |
| 1 |
| 4 |
=[1-
| 7 |
| 12 |
=
| 5 |
| 12 |
=10.
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