4.3×4.6+8.6×2.7如何巧算?
3个回答
2020-08-24
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注意8.6是4.3的2倍,
4.3×4.6+8.6×2.7
=4.3×4.6+(4.3×2)×2.7
=4.3×4.6+4.3×(2×2.7)
=4.3×4.6+4.3×5.4
=4.3×(4.6+5.4)
=4.3×10
=43
4.3×4.6+8.6×2.7
=4.3×4.6+(4.3×2)×2.7
=4.3×4.6+4.3×(2×2.7)
=4.3×4.6+4.3×5.4
=4.3×(4.6+5.4)
=4.3×10
=43
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原式=4.3×4.6+4.3×2×2.7
=4.3×(4.6+5.4)
=4.3×10
=43
希望能帮到你
=4.3×(4.6+5.4)
=4.3×10
=43
希望能帮到你
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