A store has 70 toy cars. It sells 10 cars. How many cars does the store have left?

The correct answer is: 60

The number of toy cars in the store = 70
The number of toy cars sold = 10
The number of toy cars left in the store = 70 – 10
70 – 10 = ?
Start at 70 and count back by 10s one time to subtract 10.
70, 60
70 – 10 = 60
So, the store has 60 toy cars.