Addition and Subtraction

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 does the plus sign (+) mean?

Back

The plus sign means to add numbers together.

Front

What does the minus sign (−) mean?

Back

The minus sign means to subtract one number from another.

Front

What is the sum of 5 and 3?

Back

5 + 3 = 8

Front

What is the difference between 10 and 4?

Back

10 - 4 = 6

Front

If you have 7 apples and you eat 2, how many apples do you have left?

Back

7 - 2 = 5 apples left.

Front

What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal.

Front

What is the unknown in an equation?

Back

The unknown is the number we need to find, often represented by a symbol like ? or x.

Front

How can you check if your addition is correct?

Back

You can check your addition by using subtraction. If the sum plus the number you added equals the original number, it's correct.