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Decimal Rule
Multiplying decimals with whole numbers
Multiplying decimals Mixed
Division of Decimals
100

What is a product? What is a quotient?

The answer to a multiplication problem

The answer to a division problem

100

Find the product: 4.7 × 6

What is 28.2

100
.6 x 2.1 =
1.26
100
.25 divided by .05 =
5
200

What is standard algorithm?

When you "stack" your numbers vertically as you would when adding, subtracting, or multiplying whole numbers

200

Find the product: 48.75 × 12

48.75 × 12 = 585 OR 585.00

200
4.25 x 21 =
89.25
200
3.87 divided by .9 =
4.3
300

What do you do if there is a remainder when dividing decimals?

You have to add on zero's to finish the problem.

There should be no remainder

300

Find the product: 0.56 × 15

8.4

300
.03 x .03 =
.0009
300

Find the price per ticket: A group of friends spends $84.50 on 5 concert tickets. How much does each ticket cost?

Each ticket costs $16.90

400

How do you multiply decimals?

You multiply the numbers and then you count how many spaces there are to the right of the decimals and count them over to the left in the answer.

400

A movie theater ticket costs $7.25 per person. If a family of 6 goes to the movies, how much do they spend in total?

They would spend a total of $43.50 to go the movies.

400
2.003 x .05 =
.10015
400

Find the unit price: A grocery store buys 24.75 pounds of rice for 9 large bags. How many pounds of rice are in each bag?

2.75 pounds are in each bag

500
How do you divide decimals?
You have to get rid of the decimals on the outside by moving the decimals on the inside. Then bring the decimal straight up and divide normally.
500

A school orders 25 new tablets, and each one costs $96.08 with tax included. What is the total cost of the order?

The total cost of the order of 25 tablets is $2,402.

500
.312 x 1.67 =
.52104
500

A bookstore sells $162.50 worth of books, with each book costing the same amount. If they sold 13 books, how much does each book cost?

Answer: 162.50 ÷ 13 = $12.50 per book