12.5x7.9简便计算
12.5x7.9简便计算
12.5x7.9简便计算
解:
12.5x7.9
=12.5×(8-0.1)
=12.5×8-12.5×0.1
=100-1.25
=98.75
(8.5X7.9-7.9)÷7.9的简便计算
(8.5X7.9-7.9)÷7.9
=(8.5-1)X7.9÷7.9
=7.5X1
=7.5
15.6x7.9+1.56简便计算
15.6×8-15.6×0.1+1.56
=15.6×8
=124.8
12.5x75x0.8简便计算
12.5x75x0.8简便计算
12.5x75x0.8
=12.5*0.8*75
=10*75
=750
12.5x7.2x0.08简便计算
=12.5×0.08×7.2
=1×7.2
=7.2
简便计算12.5x79十12.5怎样算
12.5x79十12.5
=12.5x(79+1)
=12.5x80
=125x8
=1000
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0.999x0.7+0.333x7.9简便计算
0.999x0.7+0.333x7.9简便计算
=0.333x(3x0.7+7.9)
=0.333x10
=3.33
80—(6.83十3.27)x7.9用简便计算
80-(6.83+3.27)×7.9
=80-10.1×7.9
=80-79.79
=0.21
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12.5乘(7.8 7.9 8.1 8.2)的简便计算
12.5×(8-0.2+8-0.1+8+0.1+8+0.2)
=12.5×8×4
=100×4
=400
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