五年级数学上册小数乘法简便计算专项练习148
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3.2×2.52=______×______25×(0.96×0.04)=(______×______)×______8.8×9.7+1.2×9.7=(______+______)×______二、用简便方法计算下面各题。
0.406×0.05×0.2 99×0.329.17×99+9.17 0.143×101-0.143 0.4×2.5 0.97×1010.5×7.93×2 2.3×1042.5×2.78×40 8.1×5.5+1.9×5.57.9×5.07=______×______25×(0.12×0.4)=(______×______)×______9.6×8.5+0.399999999999999×8.5=(______+______)×______二、用简便方法计算下面各题。
0.935×12.5×0.08 1001×0.139.23×9999+9.23 0.751×1001-0.7513.2×2.5 0.96×980.05×5.38×200 1.5×10010.025×0.2×0.04 7.5×4.3+2.5×4.33.2×1.95=______×______250×(0.98×4)=(______×______)×______7.9×4.3+2.1×4.3=(______+______)×______二、用简便方法计算下面各题。
0.342×12.5×0.8 99×0.654.93×9999+4.93 0.656×11-0.656 6.4×0.025 0.54×10010.5×6.7×0.2 1.2×1020.25×9.66×0.04 5.2×3.2+4.8×3.27.9×6.9=______×______25×(0.95×400)=(______×______)×______1.8×9.2+8.2×9.2=(______+______)×______二、用简便方法计算下面各题。
0.517×0.05×0.2 999×0.292.38×999+2.38 0.933×101-0.933 5.6×0.025 0.94×10020.5×4.38×200 2.5×10040.025×7.31×400 3.5×9.8+6.5×9.89.5×1.67=______×______0.25×(0.66×4)=(______×______)×______9.9×4.2+0.0999999999999996×4.2=(______+______)×______二、用简便方法计算下面各题。
0.572×0.05×0.2 101×0.783.99×9+3.99 0.913×11-0.9134×250 0.27×980.05×4.46×2 2.5×1050.025×3.65×0.4 3.6×7.7+6.4×7.73×6.41=______×______2.5×(0.78×40)=(______×______)×______8.2×7.7+1.8×7.7=(______+______)×______二、用简便方法计算下面各题。
0.713×1.25×800 101×0.956.17×99+6.17 0.793×10001-0.793 2×2.5 0.95×980.5×0.97×0.2 2.5×10010.025×8.43×0.04 7.8×2.8+2.2×2.87.8×0.35=______×______25×(0.36×40)=(______×______)×______4.1×9.9+5.9×9.9=(______+______)×______二、用简便方法计算下面各题。
0.417×50×0.002 999×0.838.89×999+8.89 0.975×101-0.975 7.6×0.25 0.83×10020.05×9.73×0.02 1.3×1032.5×4.38×4 1.8×1.7+8.2×1.70.3×8.21=______×______0.25×(0.12×0.4)=(______×______)×______8.7×2.2+1.3×2.2=(______+______)×______二、用简便方法计算下面各题。
0.174×0.05×0.2 1001×0.979.66×99+9.66 0.543×1001-0.543 6.8×25 0.56×980.5×1.7×2 1.1×10040.25×2.25×4 3.3×6.9+6.7×6.94.6×4.96=______×______25×(0.33×4)=(______×______)×______2.1×5.4+7.9×5.4=(______+______)×______二、用简便方法计算下面各题。
0.646×5×0.2 99×0.177.94×9999+7.94 0.932×1001-0.932 5.6×25 0.39×10020.05×9.99×0.2 2.3×1020.025×3.75×0.4 9.5×9.2+0.5×9.21.1×4.79=______×______0.025×(0.1×40)=(______×______)×______4.8×4.1+5.2×4.1=(______+______)×______二、用简便方法计算下面各题。
0.753×0.5×0.2 1001×0.135.83×999+5.83 0.157×11-0.157 2.4×0.025 0.45×1010.5×8.39×0.02 1.2×10030.25×5.11×40 7.7×6.3+2.3×6.38.5×5.78=______×______0.25×(0.58×0.4)=(______×______)×______4.7×9.3+5.3×9.3=(______+______)×______二、用简便方法计算下面各题。
0.576×0.05×0.002 1001×0.838.43×99+8.43 0.722×101-0.7226×2.5 0.83×990.05×9.38×0.02 2.2×1040.025×7.01×0.04 4.2×4.6+5.8×4.68.5×3.27=______×______250×(0.61×4)=(______×______)×______2.7×7.5+7.3×7.5=(______+______)×______二、用简便方法计算下面各题。
0.619×0.025×0.4 101×0.297.47×999+7.47 0.545×101-0.545 5.6×2.5 0.26×10020.5×2.72×2 1.5×1020.025×2.57×400 3×5.6+7×5.68.9×8.95=______×______0.025×(0.18×40)=(______×______)×______6.3×5.9+3.7×5.9=(______+______)×______二、用简便方法计算下面各题。
0.935×0.25×400 1001×0.219.65×9+9.65 0.136×11-0.136 4.8×0.25 0.13×980.05×8.32×20 2.1×10040.025×7.47×400 2.8×2.9+7.2×2.97.7×4.47=______×______0.025×(0.13×40)=(______×______)×______2.7×9.7+7.3×9.7=(______+______)×______二、用简便方法计算下面各题。