| 4×0.8×2.5×1.25 | 117×12+83×12. |
| 5 |
| 8 |
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=(
| 5 |
| 8 |
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=1+1+8,
=10;
(2)4×0.8×2.5×1.25,
=(4×2.5)×(0.8×1.25),
=10×1,
=10;
(3)117×12+83×12,
=(117+83)×12,
=200×12,
=2400.
编辑:chaxungu时间:2026-04-27 13:18:55分类:小学数学题库
| 4×0.8×2.5×1.25 | 117×12+83×12. |
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| 8 |
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| 8 |
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