5.83*0.99,1.02*6.3,10.2÷2.5这3个简便计算

题目

5.83*0.99,1.02*6.3,10.2÷2.5这3个简便计算
列综合式,并计算

答案

5.83*0.99
=5.83x1-5.83x0.01
=5.83-0.0583
=5.7717
1.02*6.3
=1x6.3+0.02x6.3
=6.3+0.126
=6.426
10.2÷2.5
=(10.2x4)÷ （2.5x4）
=40.8÷10
=4.08
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