Question

56×72+56×29-56的简便运算？

怎样简便运算

Answer 1

56×72+56×29-56
=56×72+56×29-56×1
=56×（72+29-1）
=56×100
=5600

Answer 2

56(72+29－1)=56×100=5600

Answer 3

56*72+56*29-56=56*(72+29-1)=56*100=5600

Answer 4

56x72+56x29-56
＝56x（72+29-1）
＝56x100
＝5600

Answer 5

56x72+56x29－56
=56x72+56x29－56x1
=56x(72+29－1)
=56x100
=5600