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3.8×0.7+7.35÷1.5脱式计算

14.7+0.35÷1.52 =14+7/10+35/152 =14+35/760+175/760 =14+210/760 =14+21/76 =14又76分之21

7.35×6.9+0.735×31 =7.35×(6.9+3.1) =7.35×10 =73.5 希望我的回答对您有帮助,有问题可以追问。 满意请及时采纳,谢谢!

(1)2.5*32*0.125 =(2.5*4)*(8*0.125) =10*1 =10 (2)3.5-7+6.5 =3.5+6.5-7 =3 (3)1.2×2.5+0.8×2.5 =2.5(1.2+0.8) =25 (4)8.9×1.25-0.9×1.25 =1.25(8.9-0.9) =10 (5)12.5×7.4×0.8 =12.5×0.8×7.4 =74 (6)6.5×9.5+6.5×0.5 =6.5×(9....

0.35*7.8+0.75*7.8_0.78 =0.35×7.8+0.75×7.8-7.8×0.1 =7.8×(0.35+0.75-0.1) =7.8×1 =7.8 不懂请追问

=1.3×0.35+0.87×0.35(也就是二十分之七) =(1.3+0.87)×0.35 =2.17×(0.3+0.05) =0.651+0.1085 =0.7595 汗,这是我能想到最简便的了。。。

0.45×35×5/7 =0.45×(35×5/7) =0.45×25 =11.25

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