Question

12.5×(0.8 + 4)×2.5的简便方法？

Answer 1

12.5×(0.8 + 4)×2.5的简便方法？

12.5×(0.8 + 4)×2.5
=12.5×0.8×2.5+12.5×4×2.5
=25+125
=150

Answer 2

12.5×(0.8 + 4)×2.5
= 12.5×[(0.8 + 4)×2.5]
=12.5x(2+10)
=25+125
=150

Answer 3

12.5*（0.8+4）*2.5
=12.5*（0.8*2.5+4*2.5）
=12.5*（3）
=37.5
有用的话就请采纳吧，谢谢！

追答

不好意思，算错了，
更正:12.5*（2.5*0.8+4*2.5）
=12.5*12
=144+6
=150

Answer 4

解: 12.5x(0.8+4)x2.5
=12.5x(0.8x2.5+4x2.5)
=12.5x(1+10)
=12.5x11
=137.5

Answer 5

12.5×(0.8+4)×2.5
=12.5×2.5×0.8+12.5×2.5×4
=(12.5×0.8)×2.5+12.5×(2.5×4)
=10×2.5+12.5×10
=10×(2.5+12.5)
=10×15
=150