2.3 Math Review

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. For example, 9 + 5 = 5 + 9.

Tags

CCSS.1.OA.B.3

Front

What is a number bond?

Back

A number bond is a visual representation that shows how a number can be split into parts. For example, the number bond for 10 can show 7 and 3.

Front

What is the result of 10 - 7?

Back

The result of 10 - 7 is 3.

Tags

CCSS.2.OA.A.1

Front

How can you represent a word problem with a number sentence?

Back

You can represent a word problem with a number sentence by identifying the quantities involved and the operation needed to find the answer. For example, 'Nat had 8 dogs and 10 pets in total, so the number sentence is 8 + x = 10.'

Tags

CCSS.2.OA.C.3

Front

What is the result of 10 - 6?

Back

The result of 10 - 6 is 4.

Tags

CCSS.1.OA.C.6

Front

What does it mean to solve for an unknown in an equation?

Back

Solving for an unknown means finding the value of a variable that makes the equation true.

Front

What is the sum of 9 and 5?

Back

The sum of 9 and 5 is 14.

Tags

CCSS.1.OA.A.1

Front

What is the relationship between addition and subtraction?

Back

Addition and subtraction are inverse operations. For example, if 9 + 5 = 14, then 14 - 5 = 9.

Tags

CCSS.2.NBT.B.5

Front

How do you find the total number of items when given parts?

Back

To find the total number of items when given parts, you add the quantities of the parts together.

Tags

CCSS.2.OA.C.4

Front

What is the equation to find how many cats Nat has if he has 10 pets in total and 8 dogs?

Back

The equation is 10 - 8 = 2, so Nat has 2 cats.

Tags

CCSS.2.OA.A.1