Question

156×29-56+29的简便运算？

Answer 1

156×29-56+29的简便运算就是
=156×29-58+29+2
=29x（156-2+1）+2
=（30-1）x155+2
=4650-155+2
=4495+2
=4497

Answer 2

156×29-56+29

＝156×29-27

＝4524-27

＝4497

Answer 3

（56+29）应该是（56×29）吧？这样比较能简便运算。两种都算一下。
156×29-56+29
=156×（30-1）-（56-29）
=4680-156-27
=4680-（156+27）
=4680-183
=4497

156×29-56×29
=（156-56）×29
=100×29
=2900

Answer 4

156×29-56+29
=157*29-56
=157*30-56-157
=4710-200+43-56
=4510-13
=4500-3
=4497
或
156×29-56+29
=100*29+56*29-56+29
=2929+56*28
=2929+55*28+28
=2929+11*5*28+2
=2957+11*140
=3000-43+1400+140
=4540-43
=4500-3
=4497

Answer 5

156X29一56×29
=(156一56)X29
=100×29
=2900