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0.7×1.9脱式计算

0.7×1.9=0.7×(1+0.9)=0.7+0.7×0.9=0.7+0.63=1.33

1.9-0.8×0.7 =1.9-0.56 =1.34

=1.9x11.9x0.9 =1.9x(1-0.9) =1.9x0.1 =0.19

8.9×0.1+0.1×1 =0.1×(8.9+0.1) =0.1×9 =0.9

11.9-1.9×0.6脱式计算怎么做 11.9-1.9×0.6 =10+1.9*(1-0.6)...

1.9+19点9+199点9+0点3 =2-0.1+20-0.1+200-0.1+0.3 =(2...

1.9×4点5+0点45 =1.9x4.5+4.5x0.1 =4.5x(1.9+0.1) =4...

7/9×0.125+1/9÷8 =1/9【(7X1/8)+1X1/8】 =1/9 X1/8 ...

=9/8+7/8+(1/9+8/9) =2+1 =3

(1)8/9×[7/8-(7/16-1/8)](2)10×3/4+17×75%-7×0. =8/9...

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