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7.5÷0.4 12.6×2 7.7÷1.4

原式=(12.6÷1.4)×(7.6÷1.9)×(2.32÷2.9) =9×4×0.8 =36×0.8 =28.8 望采纳,谢谢

原式 =(12.6÷1.4)x(7.6÷1.9)x(2.32÷2.9) =9x4x0.8 =36x0.8 =28.8 供参考。

7.2÷0.4+7.2÷0.6 =18+12 =30

3.5×0.4=1.4 2.5×0.4=1 2.3×0.2=0.46 2.1÷0.3=7 7.1×0.4=2.84 4.5÷0.15=30 1-0.07=0.93 0.42÷0.7=0.6 12.4÷4=3.1 2.5+1.5=4 5.9×0.2=1.18 0.48÷0.8=0.6 0.25×1.3×4=1.3 20÷0.01=2000 9÷0.01=900 5.5÷1.1=5 4.79+15.81=20.6 0.3÷0.03=10 0.2×0.1...

(1)12.6-0.84×5÷1.4,=12.6-4.2÷1.4,=12.6-3,=9.6;(2)2.8×0.25+7.2×0.25,=(2.8+7.2)×0.25,=10×0.25,=2.5;(3)7.24×[1÷(3.1-3.09)],=7.24×[1÷0.01],=7.24×100,=724;(4)0.18×(4.6-0.598÷0.46),=0.18×(4.6-1.3),=0.18×...

12.6x7.6x2.32➗1.9➗1.4➗2.9如何用简便计算? 12.6x7.6x2.32➗1.9➗1.4➗2.9 =(12.6÷4)*(7.6÷1.9)*(2.32÷2.9) =3.15*4*0.8 =10.08

https://gss0.baidu.com/-4o3dSag_xI4khGko9WTAnF6hhy/zhidao/pic/item/b7003af33a87e95021ab857c17385343fbf2b465.jpg

12.7×6/5-7.2÷(5/6)简算 =12.7x6/5+7.2x6/5 =(12.7+7.2)x6/5 =(20-0.1)x6/5 =20x6/5-0.1x6/5 =24-1/10x6/5 =24-3/25 =23又22/25

1.120-36×4÷18+35 2.(58+37)÷(64-9×5) 3.(6.8-6.8×0.55)÷8.5 4.0.12× 4.8÷0.12×4.8 5.(3.2×1.5+2.5)÷1.6 (2)3....

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