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7.2÷0.25÷0.4脱式计算,能简算的要简算

7.2/0.25/0.4 =7.2/(0.25x0.4) =7.2/0.1 =72 如有帮助请采纳, 如对本题有疑问可追问,Good luck!

(1)21÷0.25÷0.4=21÷(0.25×0.4)=21÷0.1=210; (2)3.5×0.7+5.5×0.7+0.7=(3.5+5.5+1)×0.7=10×0.7=7;(3)0.125×3.2×0.25 =(0.125×8)×(0.4×0.25)=1×0.1=0.1; (4)1.25×3.2×0.8=1.25×0.8×3.2=1×3.2=3.2.

0.75÷0.25÷0.2 =75/25*10/2 =15

7.2÷0.25÷0.15 =7.2÷(1/4)÷(3/20) =7.2×4×20÷3 =2.4×80 =192 如果上面的回答对你有帮助,请采纳答案,谢谢!

=9÷0.25÷0.4 =9÷(0.25×0.4) =9÷0.1 =9×10 =90

21÷(0.25x0.4)= 21÷0.1=210

4.92÷4.1÷0.3 =1.2÷0.3 =4

=4.1÷(0.25×0.4) =4.1÷0.1 =41 望采纳,点击采纳

=9÷(0.25×0.4) =9÷0.1 =9×10 =90

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