
4.8x3.7 +52x0.48 +8.9x5.2的简便计算?
2个回答
展开全部
4.8x3.7 +52x0.48 +8.9x5.2
=4.8x3.7 +5.2x4.8 +8.9x5.2
=4.8x(3.7+5.2)+8.9x5.2
=4.8x8.9+8.9x5.2
=8.9x(4.8+5.2)
=8.9x10
=89
=4.8x3.7 +5.2x4.8 +8.9x5.2
=4.8x(3.7+5.2)+8.9x5.2
=4.8x8.9+8.9x5.2
=8.9x(4.8+5.2)
=8.9x10
=89
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