Adding to 20

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 the sum of 5 and 3?

Back

The sum of 5 and 3 is 8.

Tags

CCSS.1.OA.A.1

Front

What does it mean to add to 20?

Back

Adding to 20 means finding a number that, when added to another number, equals 20.

Tags

CCSS.1.OA.A.1

Front

What is 10 + 10?

Back

10 + 10 = 20.

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

If you have 7 apples and you add 5 more, how many apples do you have?

Back

You have 12 apples.

Tags

CCSS.1.OA.A.1

Front

What is the result of 15 + 4?

Back

15 + 4 = 19.

Tags

CCSS.1.OA.A.1

Front

What is the missing number in 9 + ? = 20?

Back

The missing number is 11.

Tags

CCSS.1.OA.A.1

Front

If you add 2 to 18, what do you get?

Back

You get 20.

Tags

CCSS.1.OA.A.1

Front

What is 1 + 19?

Back

1 + 19 = 20.

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

How do you check if your addition is correct?

Back

You can check by subtracting one of the numbers from the sum.

Tags

CCSS.2.NBT.B.7