Number Sense and Operations

The sign means less than. is less than because of the number in the tens place. is less than , which makes less than .

To solve this problem we will subtract because David is taking away apples.

We can start at and count back .

When we subtract from a two digit number, the only number that changes in our answer is the tens position, and it will always go down by . Mentally, we can subtract from the number in the tens place to find our answer.

The ones place is always the first number on the right.

In this series we are adding each time, or counting by .

, , , and .

Each quarter is worth and each penny is worth .

We have three quarters and three pennies.