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Addition of Decimals
Subtraction of Decimals
Multiplication of Decimals
Division of Decimals
100

Add Decimals

272 + 383 = 6.55

2.72 + 3.83

100

Richard needs 10.5 kg of flour. He has 5.17 kg in one bag and 5.2 kg in another. Does Richard have enough flour?

No, he does not

100

Shelly paid for a $7.59 paperback book with a $10 dollar bill. How much change did she get back?

What is $2.41

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

Add Decimal 

6.7 - 2.33 = 437

6.7 - 2.33 = 4.37

200
.004 + 5.1 =
5.104
200
95.29 - 1.3 =
93.99
200
4.25 x 21 =
89.25
200


Mary biked 95.25 kilometers in 15 days. Which shows the average distance Mary biked each day?



What is 6.35 Kilometers?
300

Add decimal into the product. 2.39 x 4.37 = 104443

10.4443

300
.9843 + 2.67 =
3.6543
300

The Taipei 101 tower is 0.509 km tall. The Sears Tower in Chicago is 0.442 km. What is the difference in their heights.

0.067 km

300
Johnny makes $4.75 per hour at his work. If he works 16 hours, how much money will he earn?



$76

300
.425 divided by .005 =
85
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
5 + 2.78 + .030 =
7.81
400
.468 - .059 =
.409
400
2.003 x .05 =
.10015
400


On Saturday,12 friends go ice skating.Altogether,they pay $83.40 for admission.They share the cost equally.How much does each person pay?

$6.95

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

Giselle weighed two different samples of chemicals in her science class. The first sample weighed 39.05 grams. The second weighed 56.7 grams. She then mixed the two chemicals together. What was the weight of the combined samples?

95.75 grams

500

The total cost of a trip is $1067.50. The class has raised $819.24. How much more do they need?

$248.26
500

Quintin worked for 6 hours at the Karate Studio and made $7.35 per hour. How much did he make in all?

$44.10

500
.4564 divided by .04
11.41