3rd grade Operations & Algebraic Thinking

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, 3 + 5 = 5 + 3.

Front

What is the Commutative Property of Multiplication?

Back

The Commutative Property of Multiplication states that changing the order of the factors does not change the product. For example, 4 x 6 = 6 x 4.

Front

How do you find the number of rows if you have 18 items and 6 items in each row?

Back

You divide the total number of items by the number of items in each row: 18 ÷ 6 = 3 rows.

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 5 x 3 means 5 added together 3 times: 5 + 5 + 5 = 15.

Front

What does it mean to divide?

Back

Division is the process of splitting a number into equal parts. For example, 20 ÷ 4 means splitting 20 into 4 equal parts, which equals 5.

Front

If Michael and Matthew have 50 cookies to share equally, how many cookies does each get?

Back

Each person gets 25 cookies because 50 ÷ 2 = 25.

Front

What is an array in math?

Back

An array is a way to organize objects in rows and columns. For example, 3 rows of 4 objects each make an array of 12 objects.

Front

How can you use multiplication to solve a division problem?

Back

You can use multiplication to check your division. For example, if you divide 30 by 5, you can check by multiplying 5 by 6 to see if you get 30.

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. If you know that 4 x 5 = 20, you can also say that 20 ÷ 5 = 4.

Front

What is the product of 5 and 9?

Back

The product of 5 and 9 is 45.