五年级数学【小数乘除法】计算专项训练
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简介
一、口算题（20道） 0.2×3=0.6 0.5×4=2 1.2×5=6 0.8×0.3=0.24 0.7×0.6=0.42 2.5×0.2=0.5 0.36÷6=0.06 0.48÷8=0.06 1.5÷3=0.5 2.4÷4=0.6 0.9÷0.3=3 1.6÷0.4=4 3.5×0.1=0.35 0.12×0.3=0.036 4.2÷0.7=6 5.6÷0.8=7 0×3.8=0 1×0.99=0.99 7.2÷9=0.8 0.25×4=1 二、简便运算（9道） 2.5×3.7×0.4 =2.5×0.4×3.7 =1×3.7 =3.7 1.25×4.8×0.8 =1.25×0.8×4.8 =1×4.8 =4.8 7.2÷1.25÷0.8 =7.2÷(1.25×0.8) =7.2÷1 =7.2 3.6×101 =3.6×(100+1) =3.6×100+3.6×1 =360+3.6 =363.6 4.8×99 =4.8×(100-1) =4.8×100-4.8×1 =480-4.8 =475.2 4.5×102-9 =4.5×102-4.5×2 =4.5×(102-2) =4.5×100 =450 9.6÷0.25÷4 =9.6÷(0.25×4) =9.6÷1 =9.6 5.4×3.8+4.6×3.8 =3.8×(5.4+4.6) =3.8×10 =38 12.5×(0.8+8) =12.5×0.8+12.5×8 =10+100 =110
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