Number Sense and Operations - ISEE Lower Level: Quantitative Reasoning

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.

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

, , , and .

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

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

Each quarter is worth and each penny is worth .

We have three quarters and three pennies.

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.

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

, , , and .

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

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

Each quarter is worth and each penny is worth .

We have three quarters and three pennies.

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.

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

, , , and .

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

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

Each quarter is worth and each penny is worth .

We have three quarters and three pennies.

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.