2.5乘3.2乘1.25 简便运算
2.5乘3.2乘1.25 简便运算
2.5*3.2*1.25
=2.5*4*0.8*1.25
=10*1
=10
2.5乘3.2乘1.25的简便运算
=2.5x4x0.8x1.25=10x1=10
40+1.25乘15乘3.2 简便运算
100
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解:
40+1.25×15×3.2
=40+1.25×15×0.4×8
=40+(1.25×8)×(15×0.4)
=40+10×(15×0.4)
=40+10×6
=40+60
=100
2.5乘48乘1.25的简便运算
2.5x48x1.25
=(1.25x8)x(2.5x6)
=10x15
=150
0.5乘1.25乘2.5乘6.4乘7简便运算
0.5乘1.25乘2.5乘6.4乘7
=0.5x1.25x2.5x2x4x0.8x7
=(0.5x2)x(1.25x0.8)x(2.5x4)x7
=1x1x10x7
=70
1.25乘0.25乘3.2怎样简便运算
1.25×0.25×3.2
=1.25×0.25×4×0.8
=(1.25×0.8)×(0.25×4)
=1×1
=1
1.25*0.25*3.2
=1.25*0.25*0.8*4
=(1.25*0.8)*(0.25*4)
=1*1
=1
3.2乘2.5加8乘0.25简便运算
3.2乘2.5加8乘0.25简便运算
3.2x2.5+8x0.25
=3.2x2.5+0.8x2.5
=2.5x(3.2+0.8)
=2.5x4
=10
希望能帮到你
1.25乘2.5乘32怎么简便运算
1.25x2.5x32
解:简便运算
=1.25x2.5x(4x8)
=1.25x8x(2.5x4)
=10x10
=100
祝天天向上。