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小数乘法简便运算50道带答案

1、用竖式计算 0.396÷1.2= 0.756÷0.36= 15.6×13= 0.18×15= 0.025×14= 3.06×36= 0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数) 7.15×22 90.75÷3.3 3.68×0.25 16.9÷0.13 1.55÷3.9 3.7×0.016 13.76×0.8= 5.2×0.6 8.4×1.3 6.4×0.5 4.48×0.4 5.25...

159-57-4359 12×8.9106.8 6×0.88-6×0.124.56 6.13×94+6.13×6613 180÷48÷2.50.15 5.4×3982149.2 40÷8÷12.50.4 90.6-(8+20.6)62 6×16×1.25120 67.5÷9÷1.256 1.5+29.4+8.5=39.4 174.9+506.8-206.8= 474.9 3.94×94+3.94×6= 394 28×25×2.5= 1750 ...

一、判断。(1)125×72=125×8×9 ( )(2)25×4÷25×4=100÷100=1 ( )(3)125-125×8=0×8=0 ( )(4)25×13×4=25×4×13 ( ) 二、选择。(1)25×12,用简便方法计算是( )①25×3×4 ②25×4×3 ③25×6×2(2)如果甲数×3=乙数,下面说法不正...

小数加减乘除及简便计算习题 一、课堂练习 3.56+4.54+6.44+5.46 5.03-0.25-1.75 4.86+5.24-1.86 8.13+(1.87-0.5) 23.7-1.6-3.7-8.4 87.4-(21.25+17.4) -8.75 14.6-9.9 1.9+1.99+1.999 19.43-(6.72+1.43) 2.69-1.35+3.31-...

(1)2.64×1.7-2.64×0.7 =2.64×(1.7-0.7) =2.64×1 =2.64 (2)31.5×1.07-3.15×0.7 =3.15×10.7-3.15×0.7 =3.15×(10.7-0.7) =3.15×10 =31.5 (3)2.7×5.7-2.7+5.3×2.7 =2.7×(5.7-1+5.3) =2.7×10 =27 (4)0.625÷0.125×0.8 =(0.625×0.8)×8÷...

4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101 27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44 小红问姨妈今年多少岁,姨妈说:“当我是你这么大的时候你刚6岁,当你是我那么大的时候我51岁了。”姨妈多少岁? 一个工厂里面生产ABC3种零...

0.25×1.25×0.67×32 =0.25×1.25×0.67×4×8 =(0.25×4)×(0.125×8)×0.67 =1×1×0.67 =0.67 33.41÷4-3.41×0.25 =33.41×1/4-3.41×1/4 =(33.41-3.41)×1/4 =30×1/4 =7.5 0.99×0.81+0.11×9×0.19 =0.99×0.81+0.99×0.19 =0.99×(0.81+0.19) =0.99×1 =0.99 (5...

125乘8分之4 625乘(4分之15+4分之17) 25乘四分之三

5.3×6.3+2.3= 4.4×7.3+5.3= 4×8.8+1.5= 4.1×0.8-0.2= 9.9×1.4+0.6= 6.4×2.4+3.6= 12.48-4×9.7= 9.8×1.3-0.3= 4.8×9.1-0.5= 4.2×1.8-0.1= 5.59-3×4.3= 3.053-0.1×5.3= 9.4×8.4+5.8= 6.908-1.3×1.6= 13.596-9.1×5.6= 11.259-2.1×7.9= 7.3+3.8×2.3=...

94÷ 3/8 – 3/8 ÷6 6/2 -( 3/2 + 4/5 ) 8 + ( 1/8 + 1/9 ) 2/3÷1/2-1/4×2/5 2-6/13÷9/26-2/3 2/9+1/2÷4/5+3/8 10÷5/9+1/6×4 1/2×2/5+9/10÷9/20 5/9×3/10+2/7÷2/5 23-8/9×1/27÷1/27 8×5/6+2/5÷4 1/2+3/4×5/12×4/5 8/9×3/4-3/8÷3/4...

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