巧算35+36+37+38+39+40+41-25-26-27-28-29-30-31怎么算?

2025-06-22 08:53:24
推荐回答(3个)
回答1:

35+36+37+38+39+40+41-25-26-27-28-29-30-31
=(35-25)+(36-26)+(37-27)+(38-38)+(39-29)+(40-30)+(41-31)
=10+10+10+10+10+10+10
=70

回答2:

35+36+37+38+39+40+41-25-26-27-28-29-30-31
=(35-25)+(36-26)+(37-27)+(38-28)+(39-29)+(40-30)+(41-31)
=70

回答3:

35+36+37+38+39+40+41-25-26-27-28-29-30-31
=(38x7)-(28x7)
=(38-28)x7
=10x7
=70