列式计算 7.25-0.87-2.13 1427-399 46×99+46 15.9-6.75+2.08

问题描述:

列式计算 7.25-0.87-2.13 1427-399 46×99+46 15.9-6.75+2.08
1个回答 分类:数学 2014-11-29

问题解答:

我来补答
7.25-0.87-2.13
=7.25-(0.87+2.13)
=7.25-3
=4.25
1427-399
=1427-400+1
=1027+1
=1028
46×99+46
=46×(99+1)
=46×100
=4600
15.9-6.75+2.08
=9.15+2.08
=11.23
 
 
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