Mr. Stein 2nd grade addition and subtraction facts

Front

What is the sum of 5 and 2?

Back

7

Tags

CCSS.2.OA.C.3

Front

What is the sum of 2 and 9?

Back

11

Tags

CCSS.2.OA.C.3

Front

What is the sum of 5 and 7?

Back

12

Tags

CCSS.2.OA.C.3

Front

What is 15 minus 5?

Back

10

Tags

CCSS.2.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 definition of subtraction?

Back

Subtraction is the mathematical operation of taking one number away from another.

Front

What is the commutative property of addition?

Back

The commutative property of addition states that changing the order of the addends does not change the sum.

Tags

CCSS.1.OA.B.3

Front

What is the associative property of addition?

Back

The associative property of addition states that the way in which numbers are grouped does not change their sum.

Tags

CCSS.1.OA.B.3

Front

What is a fact family in addition and subtraction?

Back

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

Tags

CCSS.2.OA.C.4

Front

How do you check your addition?

Back

You can check your addition by using subtraction to see if the sum matches the original numbers.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2