题目内容
计算,能简算的要简算:
| 2.65+1.7+1.35+8.3 | 2.7×2×0.5 | 18×5+12×5. |
(1)2.65+1.7+1.35+8.3,
=(2.65+1.35)+(1.7+8.3),
=4+10,
=14;
(2)2.7×2×0.5,
=2.7×(2×0.5),
=2.7×1,
=2.7;
(3)18×5+12×5,
=(18+12)×5,
=30×5,
=150.
=(2.65+1.35)+(1.7+8.3),
=4+10,
=14;
(2)2.7×2×0.5,
=2.7×(2×0.5),
=2.7×1,
=2.7;
(3)18×5+12×5,
=(18+12)×5,
=30×5,
=150.
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