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3.6×10.2的简便脱式计算

45X10.2 =45X10+45X0.2 =450+9 =459

5.2×10.1 =5.2×10+5.2×0.1 =52+0.52 =52.52

(1)[8.5-(3.6+3.6)]÷2.6=[8.5-7.2]÷2.6=1.3÷2.6=0.5;(

7.2×10.1的脱式计算 =7.2×(10+0.1) =72+0.72 =72.72。

(2-1/6)×10 =2×10-(1/6)×10 =20-10/6 =20-5/3 =55

0.52÷2.6×10 =0.52x10÷2.6 =5.2÷2.6 =2 谢谢,请采纳

18*10.2 =18*(10+0.2) =18*10+18*0.2 =180+3.6 =1

32.5×10.1的脱式计算方法如下: =32.5×10+32.5×0.1 =325+3.25

10÷0.2÷2.5 =10÷(0.2*2.5) =10÷0.5 =20

=4.2× (10+0.2) =4.2×10+4.2×0.2 =42+0.84 =42.84

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