Mother bought 20 apples from the fruit shop. A few days later, Xiao Ming ate seven apples. If he eats two apples a day, how many days can he eat the remaining apples?

First, subtract 7 apples that Xiaoming ate from 20 apples, leaving 14 apples.

Divide the remaining 13 apples by the 2 apples you eat every day to get the quotient of 6, which means you can eat for 6 days, and the remainder is 1, which means there are still 1 apples left.

Formula: 20-7= 13 (pieces) 13÷2=6 (days) ... 1 (pieces)