[4/7X(3/5-0.25)+3/10]÷0.5
= [4/7X0.35+3/110]÷0.5
=[4/7X7/2+3/10]÷0.5
=[2+3/10]÷0.5
=23/5
[4/7X(3/5-0.25)+3/10]÷0.5
1个回答
相关问题
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口算．40×0.7= 8.4÷0.2= 3.67×0.2= 3.5÷10= 3.6÷0.6= 1.7×0.5= 1.25
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口算．40×0.7= 8.4÷0.2= 3.67×0.2= 3.5÷10= 3.6÷0.6= 1.7×0.5= 1.25
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(1)4.5×10.2 (2)(5.6+0.28)÷0.7 (3)51.6÷[(5.4-3.25)×0.8] (4)1.
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－﹙﹣4.5﹚÷﹙1/2－0.25﹚²－3.5÷│﹣0.25│²＝
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4.5÷0.9﹦ 2.5×4﹦ 25×3.3×0﹦ 294×3≈ 420÷58≈ 2.5×0.4= 0.3÷0.1﹦ 7
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3.25×7,.8-7.8（简便计算）（5x-4）÷5=4（解方程）5x-3x1.3=0（解方程）（x+0.5)×3=4
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3/5×3/10÷5/6＋1/6= 4/7×5/18＋3/7÷18/5= 12.5×0.32×25=
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直接写得数．10÷8=2.6÷0.1=44÷0.4=5.5÷0.01=4.9÷0.7=1.25×4=3.64+5.69=
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口算．1+7.9= 0.77-0.7÷10= 0.36+0.3= 7.3+5= 15-0.5= 5.7-4.3= 6.7
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15-2x=7.5 1.6÷x=2.4÷0.15 2.7÷0.3-7x=5.5 18x-4x-2.5x=3.68 3.6