Which Operation? Addition or Subtraction?

Front

What is addition?

Back

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

Tags

CCSS.1.OA.A.1

Front

What is subtraction?

Back

Subtraction is the process of finding the difference between two numbers by taking one number away from another.

Tags

CCSS.2.OA.A.1

Front

If you have 5 apples and you eat 2, how many apples do you have left?

Back

5 - 2 = 3 apples left.

Tags

CCSS.2.OA.A.1

Front

If you have 10 candies and you buy 5 more, how many candies do you have now?

Back

10 + 5 = 15 candies.

Tags

CCSS.1.OA.A.1

Front

What does it mean to find 'how many are left'?

Back

It means to use subtraction to determine what remains after some have been taken away.

Tags

CCSS.2.OA.A.1

Front

What does it mean to find 'how many in total'?

Back

It means to use addition to combine amounts to find the overall total.

Tags

CCSS.2.OA.C.4

Front

If there are 20 students in a class and 4 go home, how many are still there?

Back

20 - 4 = 16 students still in class.

Tags

CCSS.2.OA.A.1

Front

If you have 30 stickers and you give away 10, how many stickers do you have left?

Back

30 - 10 = 20 stickers left.

Tags

CCSS.2.OA.A.1

Front

If you have 15 toy cars and you get 10 more, how many toy cars do you have now?

Back

15 + 10 = 25 toy cars.

Tags

CCSS.2.OA.A.1

Front

What operation would you use to find out how many fish are left after some are caught?

Back

You would use subtraction.

Tags

CCSS.1.OA.A.1