3.2×1.5+6.4×3.5+9.6×0.5简便方法?
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3.2×1.5+6.4×3.5+9.6×0.5
=3.2×1.5+3.2×2×3.5+3.2×3×0.5
=3.2×(1.5+2×3.5+3×0.5)
=3.2×(1.5+7+1.5)
=3.2×10
=32
=3.2×1.5+3.2×2×3.5+3.2×3×0.5
=3.2×(1.5+2×3.5+3×0.5)
=3.2×(1.5+7+1.5)
=3.2×10
=32
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3.2×1.5+6.4×3.5+9.6×0.5简便方法?
=6.4×0.75+6.4×3.5+9.6×0.5
=6.4×(0.75+3.5)+9.6×0.5
=6.4×4.25+9.6×0.5
=27.2+4.8
=32
望采纳 谢谢~~
=6.4×0.75+6.4×3.5+9.6×0.5
=6.4×(0.75+3.5)+9.6×0.5
=6.4×4.25+9.6×0.5
=27.2+4.8
=32
望采纳 谢谢~~
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分配率运算简单
=3.2x1.5+3.2x7+3.2x1.5
=3.2x(1.5+7+1.5)
=3.2x10
=32
=3.2x1.5+3.2x7+3.2x1.5
=3.2x(1.5+7+1.5)
=3.2x10
=32
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3.2×1.5+6.4×3.5+9.6×0.5
=3.2×1.5+3.2×2×3.5+3.2×3×0.5
=3.2×1.5+3.2×7+3.2×1.5
=3.2×(1.5+7+1.5)
=3.2×10
=32
=3.2×1.5+3.2×2×3.5+3.2×3×0.5
=3.2×1.5+3.2×7+3.2×1.5
=3.2×(1.5+7+1.5)
=3.2×10
=32
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