Unit 5: SORT Addition or Subtraction WP

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 finding the difference between two numbers by taking one number away from another.

Front

How do you know if a problem is about addition?

Back

A problem is about addition if it asks for a total or combines groups of things.

Front

How do you know if a problem is about subtraction?

Back

A problem is about subtraction if it asks how many are left after some are taken away.

Front

What is the sum of 3 and 2?

Back

The sum of 3 and 2 is 5.

Front

What is the difference between 5 and 2?

Back

The difference between 5 and 2 is 3.

Front

If you have 4 apples and you buy 3 more, how many apples do you have?

Back

You have 7 apples. (4 + 3 = 7)

Front

If you have 10 candies and you give away 4, how many candies do you have left?

Back

You have 6 candies left. (10 - 4 = 6)

Front

What does the '+' symbol mean?

Back

The '+' symbol means to add.

Front

What does the '-' symbol mean?

Back

The '-' symbol means to subtract.