解:18+43+25等于( 86 )
∵已知需求出18+43+25等于多少
∴18 + 43 + 25
= (20 - 2)+(40 + 3)+(20 + 5)
= 20 - 2 + 40 + 3 + 20 + 5
= (20 + 40 + 20)+(-2 + 3 + 5)
= (60 + 20)+(1 + 5)
= 80 + 6
= 86
答:18+43+25等于86
18+43+25
=10+8+40+3+20+5
=10+40+20+8+3+5
=70+16
=86
从左到右按顺序来就行
18+43+25
= 61+25
= 86
18+43+25
=61+25
=86