Embed Size (px)
Citation preview
Ratio and Proportions Unit Review R1
1
Guided Practice for Unit 1 TestMAFS.7.RP.1.1MAFS.7.RP.1.2MAFS.7.RP.1.3
Ratio and Proportions Unit Review R1
2
200 40 = 160 is the amount Johnny at the second store.
$238.81 is the original cost at the second store.
Round to thenearest cent.
Ratio and Proportions Unit Review R1
3
7500 * .0388 * 712 =
203712 = 169.75
She earned $169.75 in seven months.
7500 * .0388 * 3 = 873
She earned $873.00 in three years.
Ratio and Proportions Unit Review R1
4
x y
xy= 4100 = 1
25
The equation is:
The constant ratio is 25:1, 25 to 1, or 251
y = 25x
Simplify to obtain the constant ratio.
Ratio and Proportions Unit Review R1
5
Apply the sales tax:
17.36 + 8 % 18.7488 $18.75
Round to the nearest cent.
Apply the tip:
18.75 + 20 % 22.5 The total cost is $22.50.
Ratio and Proportions Unit Review R1
6
Yes,
there is a straight line that starts at point (0,0).
Ratio and Proportions Unit Review R1
7
Set up the problem to find the unit rate for teaspoons per cup.
Unit rate:
The unit rate is 8/9 teaspoons per cup.
Simplify to obtain the unit rate.
teaspoons cups
Ratio and Proportions Unit Review R1
8
Compare "x" to "y"
Ricky spent "0" hours cutting lawns therefore,he earned "0" dollars.
Ricky spent "4" hours cutting lawns and,earned "30" dollars.
Next page.
Ratio and Proportions Unit Review R1
9
To find the hourly rate evaluate:yx
y
x
Find the hourly rate.
Ratio and Proportions Unit Review R1
10
yx
y
x
Step 1: Find "one" identifiable point on the graph. Here are the choices.
152
304
456
You only need to select "one" point.
Ratio and Proportions Unit Review R1
11
yx
152=
y
x
Find the hourly rate by simplifying y/x.
The hourly rate is $7.50 per hour.
Ratio and Proportions Unit Review R1
12
yx
7.51=
y
x
When we write an ordered pair it is written as (x,y).
(1,7.5)
Ratio and Proportions Unit Review R1
13
Ricky spent "0" hours cutting lawns therefore,he earned "0" dollars.
Ricky spent "4" hours cutting lawns and,earned "30" dollars.
yx
152=
The hourly rate is $7.50 per hour. (1,7.5)
7.5 * 25 = 187.5 Ricky earned $187.50 for 25 hours of work.
Ratio and Proportions Unit Review R1
14
calories(y) gram(x) = 450
30
The unit rate is 15 calories per gram.(y) (x)
y = 15x
y = 15(15)= 225There are 225 calories in a 15 gram serving
Ratio and Proportions Unit Review R1
15
Amount of changeOriginal amount = 29.95 22.95
22.95 = 722.95 =
0.3050108
31% Increase
Amount of change
Original amount
From 22.95 to 29.95 is an Increase.
Round to the nearest whole percent.
Ratio and Proportions Unit Review R1
16
Set up the problem to find words per minute.
1244
Simplify to obtain the unit rate.
The unit rate is 31 words per minute.
31 * 12 = 372
At this rate Barbara can type 372 words in 12 minutes.
