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8/15%0.8÷1.5×5/12

8/15-0.8÷1.5×5/12 8/15-0.8÷1.5×5/12 =8/15-8/15*5/12 =8/15*7/12 =2/15*7/3 =14/45

35.8÷12.5÷0.8-0.15 =35.8÷(12.5x0.8)-0.15 =35.8÷10-0.15 =3.58-0.15 =3.43 谢谢,请采纳

15.5除12.5除0.8 =15.5÷(12.5x0.8) =15.5÷10 =1.55 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。

0.8×0.25×0.4×12.5 =(0.8x12.5)x(0.25x0.4) =10x0.1 =1

12又4/5÷0.8-〔6又2/3+1又7/8×(3.15-2又3/4)〕 =12.8÷0.8-〔6又2/3+1又7/8×0.4〕 =16-〔6又2/3+3/4〕 =16-7又5/12 =8又7/12

1、直接写得数。 1.5×4= 0.12×3= 0.49÷0.7= 6.4×0.2+3.6×0.2= 42÷0.6= 72.8÷0.8= 1.5÷30= 3×0.2×0.5= 2、用简便方法计算。 99×2.45 5.6÷1.6 1.25×32+215×9.76×0 9.85×2.3-8.85×2.3 、求未知数x。 (得数保留一位小数) 35.16-x=27....

9.8-x=3.8 75.6÷x=12.6 5x+12.5=32.3 5(x+8)=102 x+3x+10=70 3(x+3)=50-x+3 5x+15=60 3.5-5x=2 0.3×7+4x=12.5 x÷1.5-1.25=...

(1)46×8-120÷15,=368-8,=360;(2)(12.5×8-40)÷0.6,=(100-40)÷0.6,=60÷0.6,=100;(3) 7 31 ÷ 5 2 + 3 5 × 7 31 ,= 7 31 × 2 5 + 3 5 × 7 31 ,=( 2 5 + 3 5 )× 7 31 ,=1× 7 31 ,= 7 31 ;(4) 1 5 ÷[( 2 3 + 1 5 )× 1 13...

①24.1×1.5+7.59×15,=2.41×15+7.59×15,=(2.41+7.59)×15,=10×15,=150;②(3.7+17×0.4)÷3.5,=(3.7+6.8)÷3.5,=10.5÷3.5,=3;③75.36÷12-4.32×0.5,=6.28-2.16,=4.12;④8.8×0.125,=(8+0.8)×0.125,=8×0.125+0.8×0.125,=1+0.1,=1.1...

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