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12.5乘3.6怎么简便计算脱式

12.5*4*0.9=45

0.25×32×12.5 =0.25×(4×8)×12.5 =(0.25×4)×(8×12.5) =1×100 =100

8.8×12.5=1.1x8x12.5=1.1x100=110

简便算12.5×61×8脱式计算怎么写? =12.5x8x61 =100x61 =6100

(1)(18.6-18.6÷3.1)×1.6,=(18.6-6)×1.6,=12.6×1.6,=20.16,(2)12.5×2.5×3.2,=(12.5×8)×(2.5×0.4),=100×1,=100,(3)4.5÷18=0.25,(4)32.9×0.46+5.4×3.29,=3.29×(4.6+5.4),=3.29×10,=32.9.

脱式计算 12.5×32 =12.5x8x4 =100x4 =400

1800-1800/12×5 =1800-150×5 =1800-750 =1050

2012年1月28日星期六一、口算题小数加法:0.3+1.5=2.5+9.8=7.6+1.3=4.4+5.7=2.3+7.7=5.7+3.1=7.69+2.31=9.16+2.64=5.68+12.22=16.8+16.5=小数减法:6.8-3.8=4.26-3.71=0.88-2.12=5.34-69.21=68.4-61.5=9.58-3.7=18.94-5.66=15.69-9.78=115-68.59...

0.25×3.2×12.5×13/40等于多少脱式计算 解: 0.25×3.2×12.5×13/40 =(0.25×4)×(0.8×12.5)×13/40 =1×10×13/40 =13/4

4×0.8×0.25×12.5 =4×0.25×(0.8×12.5) =1×10 =10

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