五年级上册数学《小数乘除法》专项训练

五年级上册数学《小数乘除法》专项训练简便运算第1天班级：____________姓名：____________用时：____________2.5×3.8×0.4=2.5×0.4×3.8=1×3.8=3.84.8÷0.25÷4=4.8÷(0.25×4)=4.8÷1=4.87.2÷1.25÷0.8=7.2÷(1.25×0.8)=7.2÷1=7.21.5×102=1.5×(100+2)=1.5×100+1.5×2=150+3=1537.2÷4.5=7.2÷(0.9×5)=7.2÷0.9÷5=8÷5=1.65.2×9.9+0.52=5.2×9.9+5.2×0.1=5.2×(9.9+0.1)=5.2×10=522.4×99=2.4×(100-1)=2.4×100-2.4×1=240-2.4=237.612.8÷0.4÷2.5=12.8÷(0.4×2.5)=12.8÷1=12.89.2×0.99+0.092=9.2×0.99+9.2×0.01=9.2×(0.99+0.01)=9.2×1=9.27.5×101-7.5=7.5×(101-1)=7.5×100=7508.4÷(0.7×0.4)=8.4÷0.7÷0.4=12÷0.4=306.3÷0.21÷0.5=30÷0.5=60五年级上册数学《小数乘除法》专项训练简便运算第2天班级：____________姓名：____________用时：____________1.25×4.7×0.8=1.25×0.8×4.7=1×4.7=4.79.6÷(2.4÷0.5)=9.6÷2.4×0.5=4×0.5=20.25×1.6×1.25=0.25×4×0.4×1.25=1×0.5=0.55.6×99+5.6=5.6×99+5.6×1=5.6×(99+1)=5.6×100=5603.2÷0.25÷0.4=3.2÷(0.25×0.4)=3.2÷0.1=320.78×101=0.78×(100+1)=0.78×100+0.78×1=78+0.78=78.784.5×2.01=4.5×(2+0.01)=4.5×2+4.5×0.01=9+0.045=9.0458.1÷(0.9×0.3)=8.1÷0.9÷0.3=9÷0.3=302.5×40.4=2.5×(40+0.4)=2.5×40+2.5×0.4=100+1=1016.3×2.8+3.7×2.8=2.8×(6.3+3.7)=2.8×10=283.5÷0.125÷8=3.5÷(0.125×8)=3.5÷1=3.55.4÷1.8÷0.3=3÷0.3=10五年级上册数学《小数乘除法》专项训练简便运算第3天班级：____________姓名：____________用时：____________2.5×8.8×0.4=2.5×0.4×8.8=1×8.8=8.815.6÷1.2÷5=15.6÷(1.2×5)=15.6÷6=2.63.2×4.8+3.2×5.2=3.2×(4.8+5.2)=3.2×10=328.9×1.01=8.9×(1+0.01)=8.9×1+8.9×0.01=8.9+0.089=8.9899÷0.5=(9×2)÷(0.5×2)=18÷1=184.8÷0.125=(4.8×8)÷(0.125×8)=38.4÷1=38.41.8×5.6+8.2×5.6=5.6×(1.8+8.2)=5.6×10=562.8×101-2.8=2.8×(101-1)=2.8×100=2803.2×2.5×1.25=(0.4×2.5)×(8×1.25)=1×10=106.8×102-13.6=6.8×102-6.8×2=6.8×(102-2)=6.8×100=6801.2×98+2.4=1.2×98+1.2×2=1.2×(98+2)=1.2×100=1200.45×198=0.45×(200-2)=0.45×200-0.45×2=90-0.9=89.1五年级上册数学《小数乘除法》专项训练简便运算第4天班级：____________姓名：____________用时：____________1.25×9.6×0.8=1.25×0.8×9.6=1×9.6=9.67÷0.25=(7×4)÷(0.25×4)=28÷1=280.125×48×0.8=0.125×0.8×48=0.1×48=4.88.5×4.8+8.5×5.2=8.5×(4.8+5.2)=8.5×10=859.3×99+9.3=9.3×(99+1)=9.3×100=93010÷1.25=(10×8)÷(1.25×8)=80÷10=85.8×10.1-0.58=5.8×10.1-5.8×0.1=5.8×(10.1-0.1)=5.8×10=584.2÷2.8=4.2÷(0.7×4)=4.2÷0.7÷4=6÷4=1.50.25×28×0.4=0.25×0.4×28=0.1×28=2.81.25×8.08