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7.2÷[1.8×(3.4%2.9)]怎样简算

7.2÷[1.8×(3.4-2.9)] =7.2÷[1.8×0.5] =7.2/0.9 =8

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

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

8.1÷[1.8×(3.4-2.9)] =8.1÷(1.8x0.5) =8.1÷0.9 =9

(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÷...

(1)3.7+6.3×0.5,=3.7+3.15,=6.85;(2)21.6÷3×(20-19.8),=7.2×0.2,=1.44;(3)2.5×2.9×4×2,=(2.5×4)×(2.9×2),=10×5.8,=58;(4)16.53-3.57-6.43,=16.53-(3.57+6.43),=16.53-10,=6.53;(5)5.28×9.8+0.2×5.28,=(9.8+0...

(1)9-4.8÷6×0.5,=9-0.4,=8.6;(2)2.16÷[64.8-(51.3-2.7×3],=2.16÷[64.8-(51.3-8.1],=2.16÷[64.8-43.2],=2.16÷21.6,=0.1;(3)(1.4×0.3+2.46)÷1.8,=(0.42+2.46)÷1.8,=2.88÷1.8,=1.6;(4)(2.5÷2+2÷2.5)×0.4,=(1.25+0.8...

6-1.8÷9/10÷4/5 =6-2÷4/5 =6-2.5 =3.5 2/5×0.125÷5/3÷1/8 =2/5×0.125×3/5×8 =(2/5×3/5×(0.125×8) =6/25×1 =6/25 [5/7÷(5/7×2/3)]÷6/7 =[5/7÷5/7÷2/3]÷6/7 =[1÷2/3]÷6/7 =3/2÷6/7 =7/4

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