题目内容
| 脱式计算 (能简算的要简算) 13.7×0.125×8 | 0.8×[13-(3.12+5.28)] |
| 102×0.56 | 1.53×1.7+0.47×1.7. |
(1)13.7×0.125×8,
=13.7×(0.125×8),
=13.7×1,
=13.7;
(2)0.8×[13-(3.12+5.28)],
=0.8×[13-8.4],
=0.8×4.6,
=3.68;
(3)102×0.56,
=(100+2)×0.56,
=100×0.56+2×0.56,
=56+1.12,
=57.12;
(4)1.53×1.7+0.47×1.7,
=(1.53+0.47)×1.7,
=2×1.7,
=3.4.
=13.7×(0.125×8),
=13.7×1,
=13.7;
(2)0.8×[13-(3.12+5.28)],
=0.8×[13-8.4],
=0.8×4.6,
=3.68;
(3)102×0.56,
=(100+2)×0.56,
=100×0.56+2×0.56,
=56+1.12,
=57.12;
(4)1.53×1.7+0.47×1.7,
=(1.53+0.47)×1.7,
=2×1.7,
=3.4.
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