Addition and Subtraction using a Number Line

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals along its length.

Front

How do you use a number line for addition?

Back

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

Front

How do you use a number line for subtraction?

Back

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

Front

What does it mean to start at 0 on a number line?

Back

Starting at 0 means you begin counting from the very beginning of the number line.

Front

Can a number line start at a number other than 0?

Back

Yes, a number line can start at any number, not just 0.

Front

What is the sum of 2 + 3 on a number line?

Back

The sum of 2 + 3 is 5. Start at 2 and move 3 spaces to the right.

Front

What is the result of 10 - 4 on a number line?

Back

The result of 10 - 4 is 6. Start at 10 and move 4 spaces to the left.

Front

What does the term 'total' mean in addition?

Back

The total is the final amount you get after adding numbers together.