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26乘2.05列式计算

26×2.05 =26×(2+0.05) =52+26×0.05 =52+1.3 =53.3

2 ÷ 25 = 0.08 竖式见图:

(3.6-0.8)×(1.8+2.05)=2.8×3.85=10.78

(3.6-0.8)*(1.8+2.05)=2.8*3.85=10.78

(1)40-4.05×8=40-32.4,=7.6;答:8个4.05比40少7.6.(2)4.2÷0

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