Addition within 20

Front

What is the sum of 6 and 9?

Back

15

Tags

CCSS.1.OA.A.1

Front

What is the sum of 9 and 7?

Back

16

Tags

CCSS.2.OA.C.3

Front

What is the sum of 10 and 9?

Back

19

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is the sum of 9 and 9?

Back

18

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is the sum of 12 and 6?

Back

18

Tags

CCSS.1.OA.A.1

Front

What is the definition of addition?

Back

Addition is the mathematical operation of combining two or more numbers to get a total.

Tags

CCSS.1.OA.A.1

Front

What is the commutative property of addition?

Back

The commutative property states that changing the order of the addends does not change the sum (e.g., a + b = b + a).

Tags

CCSS.1.OA.B.3

Front

What is the associative property of addition?

Back

The associative property states that the way in which numbers are grouped in addition does not change the sum (e.g., (a + b) + c = a + (b + c)).

Tags

CCSS.1.OA.B.3

Front

What is a number line and how is it used in addition?

Back

A number line is a visual representation of numbers on a straight line, used to illustrate addition by showing the movement from one number to another.

Tags

CCSS.2.MD.B.6

Front

How can you use objects to demonstrate addition?

Back

You can use physical objects like blocks or counters to visually represent the addition of two groups.

Tags

CCSS.1.OA.A.1