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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

用简便方法计算 1.8×25+24÷1.5 =45+16 =61

=7.5×(0.4×25)×1.8 =7.5×(10×1.8) =7.5×18 =7.5×20-7.5×2 =150-15 =135

用简便方法计算这题目:1点8乘25加2点2乘25 =(1.8+2.2)x25 =4x25 =100

十三点七乘零点四减二十五点八乘八点四加三十七点九乘一点六简便运算 13.7*0.4-25.8*8.4+37.9*1.6 =5.48-216.72+60.64 =-150.6 没有简算

(8 0点8)x1点25用简便方法 80.8*1.25 =80*1.25+0.8*1.25 =100+1 =101

一点8×1/4加二点2×25/百 =1.8×1/4+2.2×1/4 =(1.8+2.2)×1/4 =4×1/4 =1。

2.25×1.8+1点二五×0点一八简便 2.25*1.8+12.5*0.18 =0.18*(2.25+1.15) =0.18*3.5 =0.63

34岁牛今年犯太岁详解

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