Number Line Addition and Subtraction

Front

What is a number line?

Back

A number line is a straight line that shows numbers in order. It helps us see how numbers are related to each other.

Front

How do you add numbers using a number line?

Back

To add numbers on a number line, start at the first number and move to the right by the amount you are adding.

Front

How do you subtract numbers using a number line?

Back

To subtract numbers on a number line, start at the first number and move to the left by the amount you are subtracting.

Front

What does it mean to 'move to the right' on a number line?

Back

Moving to the right on a number line means you are adding a positive number.

Front

What does it mean to 'move to the left' on a number line?

Back

Moving to the left on a number line means you are subtracting a positive number.

Front

If you start at 3 and add 2, where do you land on the number line?

Back

You land on 5.

Front

If you start at 7 and subtract 4, where do you land on the number line?

Back

You land on 3.

Front

What is the result of adding 0 to a number on the number line?

Back

The result is the same number; adding 0 does not change the value.

Front

What is the result of subtracting 0 from a number on the number line?

Back

The result is the same number; subtracting 0 does not change the value.

Front

What is the first number on a number line?

Back

The first number is usually 0.