2.9×4.3+0.29×27+0.029×300的简便计算方法?
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2.9x4.3+0.29x27+0.029x300
=2.9x4.3+2.9x2.7+2.9x3
=2.9x(4.3+2.7+3)
=2.9x10
=29
=2.9x4.3+2.9x2.7+2.9x3
=2.9x(4.3+2.7+3)
=2.9x10
=29
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解:
2.9×4.3+0.29×27+0.029×300
=2.9×4.3+2.9×2.7+2.9×3
=2.9×(4.3+2.7+3)
=2.9×10
=29
2.9×4.3+0.29×27+0.029×300
=2.9×4.3+2.9×2.7+2.9×3
=2.9×(4.3+2.7+3)
=2.9×10
=29
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展开全部
2.9x4.3+0.29x27+0.029x300
=2.9x4.3+2.9x2.7+2.9x3
=2.9x(4.3+2.7+3)
=2.9x10
=29
=2.9x4.3+2.9x2.7+2.9x3
=2.9x(4.3+2.7+3)
=2.9x10
=29
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评论
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