add to 20 for first grade

Front

What is the sum of 4 and 4?

Back

8

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 6 and 7?

Back

13

Tags

CCSS.2.OA.C.3

Front

What is the sum of 8 and 8?

Back

16

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is the sum of 7 and 7?

Back

14

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

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 numbers in an addition problem does not change the sum.

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 an addition problem does not change the sum.

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 straight line with numbers placed at equal intervals. It is used to visually represent addition by moving to the right for positive sums.

Tags

CCSS.2.MD.B.6

Front

What is a fact family in addition?

Back

A fact family is a group of related addition and subtraction facts that use the same numbers.

Tags

CCSS.2.OA.C.4