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7.2除以1.8再除以1.8(脱式计算)

25.2÷〔14.2÷(14.2-(7.2+2.8))〕 =25.2÷〔14.2÷(14.2-10)〕 =25.2÷〔14.2÷4.2〕 =25.2×4.2÷14.2 =105.84÷14.2 =7.45 你好,本题已解答,如果满意 请点右下角“采纳答案”。

62除以4乘2 =15点5乘2 =31

=(9.87÷0.987)x7.2 =10x7.2 =72

7/9÷2/3+2/9 =7/9×3/2+2/9 =7/6+2/9 =21/18+4/18 =25/18

(九又2/7-7又2/9)÷(5/9+5/9) =2又63分之4÷10/9 =130/63×9/10 =13/7 =1又7分之6

2/7×21÷5/9 =6×9/5 =54/5

(1)5.07-(3.07-1.8)=5.07-3.07+1.8=2+1.8=3.8(2)58.6×7.2+245×5835=58.6×7.2+2.8×58.6=58.6×(7.2+2.8)=58.6×10=586(3)(12+16+18)×0.24=12×0.24+16×0.24+18×0.24=0.12+0.04+0.03=0.19(4)416-1.65-1.35=416-(1.65+1.35)=416-3=116

3.61除以括号7.2-5.3回括号乘25脱式计算 3.61除以括号7.2-5.3回括号乘25 =3.61÷(7.2-5.3)*25 =3.61*1.9*25 = 17.1475

(1)9.4÷[(1.2+1.3)÷0.25]=9.4÷[2.5÷0.25]=9.4÷10=0.94(2)(1.2+1.8×4)×(7-6.75=(1.2+7.2)×0.25=8.4×0.25=2.1(3)2.65×1.7+13.5×0.17=2.65×1.7+1.35×1.7=(2.65+1.35)×1.7=4×1.7=6.8(4)20.4-0.8×0.4-0.68=20.4-0.32-0.68=20.4-(0....

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