五上数学小数乘除法计算专项训练

五上数学小数乘除法计算专项训练

  • 简介

    1.脱式计算。(能简算的要简算) 0.25×3.2×12.5 =0.25×(4×0.8×12.5) =(0.25×4)×(0.8×12.5) =1×10 =10 3.4÷[(1.2+0.5)×5] =3.4÷[1.7×5] =3.4÷1.7÷5 =2÷5 =0.4 22.05-2.05÷0.82 =22.05-2.5 =19.55 17.64÷4.9+6.73 =3.6+6.73 =10.33 2.脱式计算,能简算的要简算。 (1)0.47×25×4 =0.47×(25×4) =0.47×100 =47 (2)3.09÷3.09÷2.5 =1÷2.5 =0.4

五上数学小数乘除法计算专项训练