Fractions, Decimals, Percents

Fraction + and -

100

1/2 + 2/5

7/10

200

3/4 - 83/100

-8/100 or -4/50 or -2/25

300

-5 - 2 1/3

-7 1/3

400

18 1/8 - 4 3/5 

13 and 21/40

500

12 1/4 - 5 2/5 = 

6   and   17/20

Decimal + and -

100

7.5 + 1.89

2.39

200

2.45- 0.8

1.65

300

12.3 - 6.63

5.67

400

An antenna is placed on top of a 40.4 foot tall telephone pole. If the antenna is 3.675 feet tall, how tall the total unit of pole and antenna? 

44.075 feet

500

Byron bought 1.9 pounds of grapes and 11/12 pounds of peaches. Give a decimal to represent how many more pounds of grapes he bought. 

59/60 pounds

Fraction Mult/Div

100

1 1/7 x 1/10 

8/70 = 4/35 

200

2   1/2 x 1   1/2 = 

3   3/4

300

-1 5/9 x -1 7/12

2 and 25/54

400

-3/4  divided by 2  2/5 

- 5/ 16

500

Fifteen songs that are all the same length are performed during a chorus concert. If the concert lasts 27 minutes and 30 seconds, how long is each song? 

1 min 5/6 seconds or 1 min 50 seconds 

Decimal Mult/Div

100

5.27(9)

47.43

200

6.2 x 1.4

8.68

300

Eben bought 28 eraser boxes for Math olympiad prizes. If each cost $0.94, how much was the total cost? 

$26.32

400

DAILY DOUA 6.25% sales tax is charged in Massachusetts. If you purchase a new speaker for $43.50, how much will it cost for the tax? How much will it cost altogether? 

$2.61 and $46.11

500

Brielle spent $4.90 for 3.5 pounds of turkey breast at the store when it was on sale. What was the sale price per pound? 

$1.40 per pound

Conversions

100

Convert these fractions to decimals: 

1/2 

1/3 

4/5 

1/9 

5/8 

0.5 

0. 333... 

0.8

0.1111... 

0. 625

200

Convert to Decimals: 

99%

72/5

8/9 

2.35%

0.99

14.4

0.888888....

0.0235

300

Convert these to Simplified Fractions: 

35% 

0.831

9.125

200%

35/100 = 7/20

831/1000

9 1/8 

200/100 = 2

400

Convert to Percent: 

3/5 

1.5

99/1000

0.211

60% 

150%

9.9%

21.1%

500

-5/6 x -0.9 

0.75