Front

What is addition?

Back

Addition is a mathematical operation that combines two or more numbers to obtain a total or sum.

Front

What is the sum of 9 and 1?

Back

The sum of 9 and 1 is 10.

Tags

CCSS.2.OA.C.3

Front

What is the sum of 2 and 9?

Back

The sum of 2 and 9 is 11.

Tags

CCSS.1.OA.A.1

Front

What is the sum of 4 and 7?

Back

The sum of 4 and 7 is 11.

Tags

CCSS.2.OA.C.3

Front

What is the sum of 9 and 3?

Back

The sum of 9 and 3 is 12.

Tags

CCSS.2.OA.C.3

Front

What is the sum of 7 and 1?

Back

The sum of 7 and 1 is 8.

Tags

CCSS.1.OA.A.1

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 (e.g., a + b = b + a).

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 (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 in a straight line. It is used in addition to help visualize the process of combining numbers.

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

Front

How can you check your addition?

Back

You can check your addition by using the inverse operation, subtraction, to see if the sum minus one of the addends equals the other addend.

Tags

CCSS.HSN.CN.A.2