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小数乘法简便运算50道

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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 ...

.5×0.07 = 6.3÷0.09 = 2.5×3.6 = 19.8÷3.3 = 5÷0.25 = 0.76÷0.4 = 2.36×0.22 = 2.8×4.58 = 3.57÷4.2 = 82.8÷ 36 = 45×2.46 = 3.6÷0.24 = 382.5÷45 = 6.4×5.48 = 13.42×4.73 = 9.65×8.12 = 7.23×1.2 = 6.3×12 = 2.14×8.3 = 4.9×1.12 = 21.98×2.31...

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...

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-...

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...

不祥

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