10.75+0.4-9.86简便计算

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10.75+0.4-9.86简便计算
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10.75+0.4-9.86简便计算
10.75+0.4-9.86简便计算

10.75+0.4-9.86简便计算
10.75+0.4-9.86
=10.75+0.4-(10-0.14)
=10.75+0.4-10+0.14
=(10.75-10)+(0.4+0.14)
=0.75+0.54
=1.29

=10.75-9.86+0.4
=10.75-10+0.44
=0.75+0.44
=1.19

10.75+0.4-9.86
=10.75+0.4-9.75-0.11
=(10.75-9.75)+(0.4-0.11)
=1+0.29
=1.29