问题标题:
3.8×4.56+3.83×5.44怎样简便运算?
问题描述:
3.8×4.56+3.83×5.44怎样简便运算?
李新利回答:
3.8X4.56+3.83X5.44
=3.8X4.56+(3.8+0.03)X5.44
=3.8X4.56+3.8X5.44+0.03X5.44
=3.8X(4.56+5.44)+0.3X0.544
=3.8X10+0.1632
=38.1632
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