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1.2×(9.6÷24)÷4.8的简便计算

1.2*9.6/4.8/2.4=1

1

=1.2×4÷4.8=4.8÷4.8=1

4.8÷0.24÷2 =(4.8÷2.4)x(10÷2) =2x5 =10

解:【1.9÷19%×(4.8-3.45)】÷(19-30.6x0.25) =[1.9÷0.19×1.35]÷(19-7.65) =(10×1.35)÷11.35 =13.5÷11.35 =1350/1135 =1又43/227

简便计算: [1.9+1.9×(4.8—3.81)]÷(2.9—2.8) =[1.9+1.9×0.99]÷0.1 =1.9×(1+0.99)÷0.1 =1.9×1.99÷0.1 =3.781÷0.1 =37.81 2—(1881×1882—1)分之(1881 +1880×1882) =2—(1880×1882+1882—1)分之(1881 +1880×1882) =2—(1880×1882+1881)分之(1881 +1...

4.8÷(5/9×4.8)=4.8÷(5×4.8)/9=4.8×9/(5×4.8)=9/5

①6.9×3.6-4.84÷0.4,=24.84-12.1,=12.74;②4.75+8.4÷(9.2-6.8),=4.75+8.4÷2.4,=4.75+3.5,=8.25;③1.2÷[2.5×(4.3-2.7)],=1.2÷[2.5×1.6],=1.2÷4,=0.3;④4.5×(0.75-0.356)+9.23,=4.5×0.394+9.23,=1.773+9.23,=11.003;⑤0.88÷0.8+3....

20.5×4.8÷0.25 =20.5×4.8÷4分之1 =20.5×4.8×4 =20.5×4×4.8 =(20+0.5)×4×4.8 =(20×4+0.5×4)×4.8 =82×(5-0.2) =82×5-82×0.2 =410-16.4 =410-20+3.6 =390+3.6 =393.6

(1)8.5+1.5×2+1÷0.4=8.5+3+2.5 =(8.5+2.5)+3=11+3=14 (2)6.9×3.6-4.84÷0.4=24.84-12.1=12.74 (3)4.75+8.4÷(9.2-6.8)=4.75+8.4÷2.4=4.75+3.5=8.25(4)1.25×64=(1.25×8)×8=10×8=80 (5)1.9×2.34+1.9×7.66=1.9×(2.34+7.66)=1.9×10=19

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