Doubles: Addition

Front

What is the result of adding two identical numbers together?

Back

The result is double the value of that number.

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is 1 + 1?

Back

2

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is 7 + 7?

Back

14

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is 8 + 8?

Back

16

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is 9 + 9?

Back

18

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is 12 + 12?

Back

24

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

How can you express the addition of two identical numbers mathematically?

Back

You can express it as 2 times the number (e.g., 2 * x).

Tags

CCSS.2.OA.C.3

Front

What is the term for the result of an addition operation?

Back

The term is 'sum'.

Tags

CCSS.1.OA.A.1

Front

If x is a number, how can you represent the sum of x and x?

Back

It can be represented as 2x.

Tags

CCSS.7.EE.A.1

Front

What is the sum of 10 + 10?

Back

20

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2