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7.2÷[1.8×(3.4%2.9)]怎样简算

7.2÷1.8×(3.4-2.9) =4×0.5 =2 你好,本题已解答,如果满意 请点右上角“采纳答案”。

解:依题意得算式, 7.2÷1.8×(3.4-2.9) =4×0.5 =2 7.2÷1.8×(3.4-2.9)=2

(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....

2.85-(3.4-0.4)÷3 =2.85-3÷3 =2.85-1 =1.75

(1)1.36+4.85+2.64+6.15,=(1.36+2.64)+(4.85+6.15),=4+11,=15;(2)98.5÷2.5÷4,=98.5÷(2.5×4),=98.5÷10,=9.85;(3)5.4÷[2.5×(3.7-2.9)],=5.4÷[2.5×0.8],=5.4÷2,=2.7;(4)0.8×(4-3.68)÷0.01,=0.8×0.32÷0.01,=0.256÷...

简便计算3/4×(9-7/9-2/9) 3/4×(9-7/9-2/9) =3/4*【9-(2/9+7/9)】 =3/4*8 =6

=((1x5x7x8x10)x(2x11)x(3x9)x(4x6))/(27x25x24x22) =2800/25 =112

2÷(3/4)-6分之1的差乘9分之5 =(8/3-1/6)x5/9 =(16/6-1/6)x5/9 =5/2x5/9 =25/18

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