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(8点25一3点75)除以2点5除以4的简便方法计算

(8.25-3.75)÷2.5÷4 =4.5÷(2.5×4) =4.5÷10 =0.45

6.9×0.125×1.75÷(2.3×1/8×1/4) =6.9×1/8×7/4÷2.3÷1/8÷1/4 =(6.9÷2.3)×(1/8÷1/8)×(7/4÷1/4) =3×1×7 =21

用简便方法计算18.75减六点二点三点八 =18.75-6.2-3.8 =18.75-10 =8.75

x^2÷2=8 x^2=16 则4×4÷2=8 或(-4)×(-4)÷2=8

3/4×8.28+75%+0.75×1/5 =0.75×8.28+0.75+0.75×0.2 =0.75×(8.28+1+0.2) =0.75×9.48 =7.11

。。如果你发算式不带文字的话或许我会回答你,这太乱了。。

4.25加6.9+3点75+3点一 =(4.25+3.75)+(6.6+3.1) =8+10 =18 朋友,请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!!! 朋友,请【采纳答案】,您的采纳是我答题的动力,如果没有明白,请追问。谢谢。

4.25×25分之8+25分之8×3点75 =4.25×25分之8+25分之8×3.75 =25分之8×(4.25+3.75) =25分之8×8 =25分之64

8分之1×5.75+0.125×4又4分之1 =0.125×5.75+0.125×4.25 =0.125×(5.75+4.25) =0.125×10 =1.25

原式=<48.75-8.75>×0.5=20

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