解:8+29等于( 37 )
∵已知需求出8+29等于多少
∴8 + 29
= (10 - 2)+(30 - 1)
= 10 - 2 + 30 - 1
= (10 + 30)+ (-2 - 1)
= 40 - 3
= 37
答:8+29等于37