Multiplication and Division

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 x 4 means adding 3 four times (3 + 3 + 3 + 3 = 12).

Front

What is division?

Back

Division is a mathematical operation that represents the process of splitting a number into equal parts. For example, 12 ÷ 4 means splitting 12 into 4 equal parts, which equals 3.

Front

What is a fact family?

Back

A fact family is a group of related addition and subtraction or multiplication and division facts that use the same numbers. For example, the numbers 3, 5, and 15 can form the fact family: 3 x 5 = 15, 5 x 3 = 15, 15 ÷ 5 = 3, and 15 ÷ 3 = 5.

Front

How do you find the number of items each person gets when dividing?

Back

To find out how many items each person gets, divide the total number of items by the number of people. For example, if there are 50 pretzels and 10 friends, you calculate 50 ÷ 10 = 5 pretzels per friend.

Front

What is the product of 9 and 8?

Back

The product of 9 and 8 is 72 (9 x 8 = 72).

Front

What does it mean to have a remainder in division?

Back

A remainder is the amount left over after division when the numbers do not divide evenly. For example, if you divide 10 by 3, you get 3 with a remainder of 1.

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. This means that if you multiply two numbers, you can divide the product by one of the numbers to get the other number back.

Front

How can you check your multiplication answer?

Back

You can check your multiplication answer by using division. For example, if you calculated 9 x 8 = 72, you can check by dividing 72 by 9 to see if you get 8.

Front

What is the quotient of 72 divided by 8?

Back

The quotient of 72 divided by 8 is 9 (72 ÷ 8 = 9).

Front

What is an example of a division problem with no remainder?

Back

An example of a division problem with no remainder is 20 ÷ 5 = 4. This means 20 can be evenly divided into 5 groups of 4.