5的剩法口决每两句相邻口诀的间隔是?

2025-04-05 03:56:53
推荐回答(1个)
回答1:

1x5=5 2x5=10 3X5=15 4x5=20
5X5=25 5X6=30 5x7=35 5X8=40
5X9=45
每两句相邻口诀的间隔是5