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2.9%2.9×0.52脱式计算

0.52×(9.9+0.1) 0.52×10 5.2

=2.9-0.19 =2.71 请采纳!

你好,很高兴为你解答 2/7×9/2×7/9,,这样脱式计算 =9/7x7/9 =1 满意采纳哦!

(九又2/7-7又2/9)÷(5/9+5/9) =2又63分之4÷10/9 =130/63×9/10 =13/7 =1又7分之6

(13.9一2.1)x0.37 =11.8×0.37 =4.366

1/2-2/9*(4又1/2-3又3/5+1又7/20)=1/2-2/9*(4又10/20-3又12/20+1又7/20)=1/2-2/9*2又1/4=1/2-2/9*9/4=1/2-1/2=0

①2.7+3.1+2.9+3.2,=(2.7+3.2)+(3.1+2.9),=5.9+6,=14.9;②0.44×8.3+8.3×0.56,=(0.44+0.56)×8.3,=1×8.3,=8.3;③12.53-1.35×2-9.3,=12.53-2.7-9.3,=12.53-(2.7+9.3),=12.53-12,=0.53;④25×32×0.5,=25×4×8×0.5,=(25×4)×(8×0....

6.2÷9/5 =62/10×9/5 =279/25 =11又4/25

5/9-2/11+4/9-9/11 =(5/9+4/9)-(2/11+9/11) =9/9-11/11 =1-1 =0

9/4加2/3减9/6怎么脱式计算0 4/9+2/3-6/9 =4/9+2/3-2/3 =4/9+0 =4//9

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