AI Tutor
Imagine you are at the school store, and you want to buy a cool dinosaur eraser for 30Β’. If your pocket is full of nickels, how do you pay the exact price without counting one penny at a time?
Instead of counting by ones, we can skip-count by the value of our coin to reach the price tag fast.

Paying with Nickels (Count by 5s)

A nickel is worth 5 cents (5Β’). Every time you set down one nickel, you add 5 to your total.
To pay 30Β’ for the eraser, we count by 5s until we land right on 30: 5Β’, 10Β’, 15Β’, 20Β’, 25Β’, 30Β’.
Since we said 6 numbers, it takes 6 nickels to pay exactly 30Β’.
What if our pocket has dimes instead, and we want an item that costs 50Β’?

Paying with Dimes (Count by 10s)

A dime is worth 10 cents (10Β’). When you pay with dimes, you skip-count by tens.
To pay 50Β’ for a shiny notebook, count by 10s: 10Β’, 20Β’, 30Β’, 40Β’, 50Β’.
It takes 5 dimes to pay exactly 50Β’ because 5 tens equal 50.