Question

0.56×55+56×45简便运算？

Answer 1

0.56*55+56*45
=0.56*55+0.56*100*45
=0.56*(55+100*45)
=0.56*(55+4500)
=0.56*4555
=255080

Answer 2

原式＝0.56x55+55x45+45
＝55x（45+0.56）+45
＝55x45.56+45
＝55x（50-4.44）+45
＝55x50-55x4.44+45
＝2750-（50+5）x4.44+45
＝2750-50x4.44-5x4.44+45
＝2750-222-22.2+45
＝2750-200-44.2+45
＝2550+0.8
＝2550.8

Answer 3

0.56×55+56×45
=56×0.01×55+56×45
=56×（0.55+45）
=56×45.55
=2550.8

Answer 4

0.56×55+56×45
=56×0.01×55+56×45
=56×（0.55+45）
=56×45.55
=2550.8

Answer 5

这道题我们可以用 56乘 0.55+56×45 用56乘括号 0.55+45，用乘法分配率就可以了