BA 5th Grade Proportions & Decimals

Proportions/Rates Review

100

Find d:

6/d = 42/91

d = 13

200

Find y:

y/24 = -24/576

y = -1

300

If you are driving at 55 mph on a straight highway, how long will it take you to travel 3795 miles?

69 hours

400

Find x:

245/x = 15925/715

x = 11

500

If a recipe for 24 cookies calls for 2 cups of sugar and 3.5 cups of flour, how many cups of sugar and flour do you need to make 14 cookies?

7/6 cups of sugar, 49/24 cups of flour

+ and - Decimals

100

-2.4 + 4.9 = 

2.5

200

-23.5235 - 235.235 = 

-258.7585

300

21235.453 + 25.342523 = 

21260.785523

400

0.123456789 - 0.12345678 = 

0.00000008

500

432.72343294 - 2.2178312 =

430.50560174

Dividing Decimals

100

45.45/5 =

9.09

200

60/2.4 =

25

300

6.75/0.27 =

25

400

0.111111111111111111111111111111111111/0.111111111111111111111111111111111111 = 

1

500

2.48/0.025 =

99.2

Multiplying Decimals

100

10000 * 2.45332

24533.2

200

250 * -2.35

-587.5

300

67.9 * 15.8 = 

1072.82

400

6/5 * -9.8 * -4.5

52.92 OR 1323/25

500

234.52 * 234.52

54999.6304

Miscellaneous

100

Unscramble:

north

(answer is not north)

thorn

200

Where is St. Basil's Cathedral?

Moscow, Russia

300

What do you call a grilled sandwich?

panini

400

What is the softest material on the Mohs Scale?

Talc

500

What is the birthstone of February?

amethyst