Chapter Eight Practice: Apply Multiplication and Division

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.

Front

What is division?

Back

Division is a mathematical operation where a number is split into equal parts. For example, 12 divided by 3 (12 ÷ 3) means splitting 12 into 3 equal parts, which equals 4.

Front

How do you find the number of items in each group when dividing?

Back

To find the number of items in each group when dividing, you divide the total number of items by the number of groups. For example, if you have 20 apples and want to divide them into 4 groups, you do 20 ÷ 4 = 5 apples per group.

Front

What is the formula for multiplication?

Back

The formula for multiplication is: Total = Number of groups x Number in each group. For example, if there are 5 groups with 3 items each, the total is 5 x 3 = 15.

Front

What is the formula for division?

Back

The formula for division is: Total = Number of groups x Number in each group. To find the number in each group, you can rearrange it to: Number in each group = Total ÷ Number of groups.

Front

If Max has 50 baseball cards and divides them into 5 cases, how many cards are in each case?

Back

10 cards.

Front

If Ryan makes $56 a week and earns $7 per lawn, how many lawns does he rake?

Back

8 lawns.

Front

If Michael's family has $66 and tickets cost $11 each, how many tickets can they buy?

Back

6 tickets.

Front

If Stewart runs 8 miles four times a week, how many miles does he run in two weeks?

Back

64 miles.

Front

If Sunshine needs 6 pieces of ribbon, each 12 inches long, how many inches does she need altogether?

Back

72 inches.