Multiplication & Division Review

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times: 3 + 3 + 3 + 3 = 12.

Tags

CCSS.3.OA.A.1

Front

What is division?

Back

Division is the process of splitting a number into equal parts. It answers the question of how many times one number is contained within another. For example, 12 divided by 3 (12 ÷ 3) means how many groups of 3 are in 12, which is 4.

Tags

CCSS.3.OA.A.2

Front

How do you find the total number of items when you know the number of groups and items per group?

Back

Multiply the number of groups by the number of items in each group. For example, if there are 5 groups with 4 items each, the total is 5 x 4 = 20.

Tags

CCSS.2.OA.C.3

Front

How do you find out how many groups you can make from a total number of items?

Back

Divide the total number of items by the number of items in each group. For example, if you have 20 items and want to make groups of 4, you do 20 ÷ 4 = 5 groups.

Tags

CCSS.3.OA.A.2

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. This means that if you multiply a number and then divide by the same number, you will return to the original number. For example, 6 x 3 = 18 and 18 ÷ 3 = 6.

Tags

CCSS.4.NBT.B.6

Front

If a hotel elevator holds 8 people, how many trips are needed for 367 people?

Back

To find the number of trips, divide the total number of people by the elevator capacity: 367 ÷ 8 = 45 trips with 7 people left over, so 46 trips are needed.

Tags

CCSS.6.RP.A.3B

Front

How do you calculate total earnings from a weekly wage?

Back

Multiply the weekly wage by the number of weeks worked. For example, if you earn $98 a week for 12 weeks, your total earnings are 98 x 12 = $1,176.

Front

What is the formula to calculate total sales from the number of items sold and the price per item?

Back

Multiply the number of items sold by the price per item. For example, if 453 packs of erasers are sold at $6 each, the total sales are 453 x 6 = $2,718.

Tags

CCSS.3.OA.D.8

Front

If Billy cuts 48 apples into 6 pieces each, how many pieces does he have?

Back

Multiply the number of apples by the number of pieces each apple is cut into: 48 x 6 = 288 pieces.

Tags

CCSS.3.OA.A.3

Front

What does 'R' mean in division problems?

Back

'R' stands for 'remainder.' It indicates that there are leftover items after division. For example, 20 ÷ 3 = 6 R2 means 6 groups of 3 with 2 left over.

Tags

CCSS.4.NBT.B.6