怎样计算0.74×8.2-7.47×0.72简便

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怎样计算0.74×8.2-7.47×0.72简便
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怎样计算0.74×8.2-7.47×0.72简便
怎样计算0.74×8.2-7.47×0.72简便

怎样计算0.74×8.2-7.47×0.72简便
0.74×8.2-7.4×0.72 是这样吧
=0.74×8.2-0.74×7.2
=0.74×(8.2-7.2)
=0.74×1
=0.74

题目应该有问题,
0.74×8.2-7.4×0.7
=7.4×0.82-7.4×0.72
=7.4×(0.82-0.72)
=7.4×0.1
=0.74

是0.74×8.2-0.47×0.72吧
没错的话就=0.74×(8.2-7.2)
=0.74×1
=0.74