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Ratios
Math
Middle School Math

 Name _____________________________ Date ___________________
Ratios
State whether the ratios are proportional. Write yes or no.
1.
 666
,
 333

2.
 136171
,
 1519

3.
 1822
,
 72104

Solve each proportion.
4.
 79236
=
 u27

5.
 r153
=
 517

6.
 35145
=
 546y

Solve each proportion.
7.
 s28
=
 34

8.
 64.458.8
=
 j109.2

9.
 442a
=
 23821

Create a proportion from each set of numbers. Only use 4 numbers from each set of numbers.
 10 9, 3, 2, 6
 11 19, 47, 423, 171, 855

 Key #2
Complete the unit conversions.
12.   8 centigrams to milligrams
8 cg
 mg          cg
=    ________  milligrams
13.   80 ounces to pounds
80 oz
 lb          oz
=    ________  pounds

Complete the unit conversions.
 14 22 pints to quarts
 15 468 inches to yards
 16 18 mins to secs
 17 10 kilograms to grams
 18 6 meters to millimeters
 19 120 pints to gallons

 20 1464 calories for 6 servings of pie________ calories per serving
 21 a 4.3-kg bag of peaches for \$8.90________ per kg

Fill in the missing dimensions. Round your answer to the nearest tenth.
22.   The scale factor for a model is 4 in = 13.1 yd
 model: 17.2 in actual: ________ yd

23.   The scale factor for a model is 6 cm = 10.8 m
 model: 47 cm actual: ________ m

 Key #2
Use a proportion to find the unknown length in the pair of similar figures.
(drawings are not drawn to scale)

24.
length of sides:
 DA  = ________ AB  = 100 m CD  = 100 m BC  = ________

 OP  = 30 m MN  = 30 m PM  = 18 m NO  = 18 m
25.
length of sides:
 KL  = 96 ft JL  = 112 ft KJ  = 64 ft

 CB  = 72 ft AB  = 108 ft AC  = ________

Complete.
 26 If the probability that a chicken will cross the road is one-fourth, then what is the ratio that the chicken will cross the road to the chicken will not cross the road? _______ to _______
 27 Which is bigger, a third of 36 or one-sixth of 138?

Sample
This is only a sample worksheet.

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