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Math Math Chapter 16Chapter 16
ReviewReview
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Complete the chart. Write all fractions in simplest form.
Fractions Decimals Percents
.22
7%
⅛
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Complete the chart. Write all fractions in simplest form.
Fractions Decimals Percents
22 = 11100 50 .22 22%
7100 .07 7%
⅛ .125 12.5%
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Write the decimal, fraction (in simplest form) and percent that represent the shaded part.
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Write the decimal, fraction (in simplest form) and percent that represent the shaded part.
.55
55 = 11 100 20
55%
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Use the picture to write the ratios. Tell whether the ratio compares
part to part, part to whole, or whole to part.
All shapes to triangles.
Rectangles to ovals.
Ovals to all shapes.
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Use the picture to write the ratios. Tell whether the ratio compares
part to part, part to whole, or whole to part.
All shapes to triangles.
18 : 9 whole to part
Rectangles to ovals.
3 : 6 part to part
Ovals to all shapes.
6 : 18 part to whole
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Which of the following shows two equivalent ratios?
a. 7 : 9 and 14 : 16
b. 7 : 9 and 14 : 18
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Which of the following shows two equivalent ratios?
b. 7 : 9 and 14 : 18
7 = 14
9 18
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Write two equivalent ratios for each of the following.
a. 12 : 15
b. 1
3
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Write two equivalent ratios for each of the following.
a. 12 : 15 24 : 30 4 : 5
b. 1 2 3
3 6 9
*Note: There is more than 1 right answer.
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Tell whether the ratios form a proportion.
Write yes or no.
4 and 26 24 and
27
10 65 6 9
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Tell whether the ratios form a proportion.
Write yes or no.
4 and 26 24 and
27
10 65 6 9
Yes No
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Solve the following proportions using Cross Products. Show your work!!
8 = x 9 =12
36 54 x20
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Solve the following proportions using Cross Products. Show your work!!
8 = x 9 =12
36 54 x20
36x = 8(54) 12x = 9(20)
36x = 432 12x = 180
36 36 12 12
x = 12 x = 15
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Find the Find the %% of the number. of the number.
75% of 12075% of 120
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Find the Find the %% of the number. of the number.
75% of 12075% of 120
.75 x 120 = 90.75 x 120 = 90
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Find the Find the %% of the number. of the number.
30% of 5030% of 50
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Find the Find the %% of the number. of the number.
30% of 5030% of 50
.30 x 50 = 15.30 x 50 = 15
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Find the Find the %% of the number. of the number.
6% of 3006% of 300
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Find the Find the %% of the number. of the number.
6% of 3006% of 300
.06 x 300 = 18.06 x 300 = 18
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What is the What is the unit rateunit rate ? ? Show your work!!Show your work!!
a. Earn $56 for an 8 hour day
b. Score 120 points in 15 games
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What is the What is the unit rateunit rate ? ? Show your work!!Show your work!!
a. $$ $56 = x
hours 8 1 x = $7 per hour
b. points 120 = x
games 15 1 x = 8 points per game
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If the If the map scalemap scale is 1 in. = 15 is 1 in. = 15 miles, what is the miles, what is the map distancemap distance if if
the the actual distance is 60 miles? actual distance is 60 miles?
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If the If the map scalemap scale is 1 in. = 15 is 1 in. = 15 miles, what is the miles, what is the map distancemap distance if if
the the actual distance is 60 miles? actual distance is 60 miles?
InchInch 1 1 = = xxMiles 15 60Miles 15 60
15x = 1(60)15x = 1(60)15x15x = = 606015 1515 15
x = 4 inchesx = 4 inches
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It takes Kenny 25 minutes to It takes Kenny 25 minutes to inflate the tires of 50 inflate the tires of 50
bicycles. How long will it bicycles. How long will it take him to inflate the tires take him to inflate the tires
of 120 bicycles?of 120 bicycles?
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It takes Kenny 25 minutes to It takes Kenny 25 minutes to inflate the tires of 50 bicycles. inflate the tires of 50 bicycles.
How long will it take him to How long will it take him to inflate the tires of 120 bicycles?inflate the tires of 120 bicycles?
minutes minutes 25 25 = = xx bicycles 50 120 bicycles 50 120
50x = 25 (120) 50x = 25 (120) 50x50x = = 3,0003,000
50 50 50 50
x = 60 minutes x = 60 minutes
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How many pizzas do you need for How many pizzas do you need for a party of 135 people a party of 135 people
if at the last party, if at the last party, 90 people ate 52 pizzas?90 people ate 52 pizzas?
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How many pizzas do you need for a party How many pizzas do you need for a party of 135 people if at the last party, 90 of 135 people if at the last party, 90
people ate 52 pizzas?people ate 52 pizzas?
pizzas pizzas 52 52 = = xx people 90 135 people 90 135
90x = 52 (135) 90x = 52 (135) 90x90x = = 7,0207,020
90 90 90 90
x = 78 pizzas x = 78 pizzas
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Practice, Practice,
Practice, Practice,
Practice! Practice!