3.8×43.7+4.12×38+151×0.38 怎么简便运算

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3.8×43.7+4.12×38+151×0.38怎么简便运算3.8×43.7+4.12×38+151×0.38怎么简便运算3.8×43.7+4.12×38+151×0.38怎么简便运算3.8×43.

3.8×43.7+4.12×38+151×0.38 怎么简便运算
3.8×43.7+4.12×38+151×0.38 怎么简便运算

3.8×43.7+4.12×38+151×0.38 怎么简便运算
3.8×43.7+4.12×38+151×0.38
=3.8×43.7+41.2×3.8+15.1×3.8
=(43.7+41.2+15.1)×3.8
=100×3.8
=380

3.8×43.7+4.12×38+151×0.38
=3.8×43.7+41.2×3.8+15.1×3.8
=3.8×(43.7+41.2+15.1)
=3.8×100
=380