Subtraction within 20

Front

What is subtraction?

Back

Subtraction is taking away a number from another number. It shows how many are left.

Tags

CCSS.2.NBT.B.7

Front

What does the minus sign (-) mean?

Back

The minus sign means to subtract or take away.

Tags

CCSS.7.NS.A.1C

Front

What is 10 - 3?

Back

10 - 3 = 7

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CCSS.1.OA.C.6

Front

If you have 15 apples and you give away 5, how many do you have left?

Back

15 - 5 = 10 apples left.

Tags

CCSS.2.OA.A.1

Front

What is the result of 8 - 2?

Back

8 - 2 = 6

Tags

CCSS.1.OA.A.1

Front

What does it mean to 'take away'?

Back

To 'take away' means to remove something from a group.

Tags

CCSS.1.OA.A.1

Front

If you have 12 candies and eat 4, how many candies are left?

Back

12 - 4 = 8 candies left.

Tags

CCSS.2.OA.A.1

Front

What is 5 - 5?

Back

5 - 5 = 0

Tags

CCSS.1.OA.B.3

Front

If there are 20 birds and 7 fly away, how many are left?

Back

20 - 7 = 13 birds left.

Tags

CCSS.2.OA.A.1

Front

What is the difference between 9 and 4?

Back

9 - 4 = 5

Tags

CCSS.1.OA.A.1