Post on 14-Dec-2014
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ProportionRatio
You use 2 cups of pretzels to make 6 cups of party mix, what is the ratio of
pretzels to other ingredients?
2:4
2 to 4
2/4
Name two equivalent ratios
for 24 : 8
One larger and one smaller
12 : 4
48 : 16
Find the value that makes the
ratios equal
6 : 12 , 36 : ___
6 : 12 , 36 : _72__
Give the simplest form of the ratio
18 to 12
3 to 2
Write to following ratio in simplest
form
32 : 20 : 8
8 : 5 : 2
Which is a rate?
25 miles per 1 gallon
5 green jelly beans to 2 red jelly beans
20 students to 1 teacher
25 miles per 1 gallon
If you read 66 pages in 2 hours what is your unit
rate?
33 pages an hour
If your heartbeats 210 in 3 minutes what is your unit
rate?
70 heartbeats per minute
Which bagel deal has a better unit rate?
3 for $2.85
5 for $4.00
Give the unit rate for each.
3 for $2.85
.95
5 for $4.00
.80
Which Gatorade is a better price per
ounce?
$1.20 for 24 oz
$1.29 for 32 oz
$1.20 for 24 oz
.05 per oz
$1.29 for 32 oz
.04 per oz
Prove if these ratios form a proportion
4/7 , 14/21
No
4 x 21 = 84
7 x 14 = 98
Prove if these ratios form a proportion
5/15 , 9/27
No
5 x 27 = 135
15 x 9 = 135
5 notebooks cost $7.50 set up and
solve a proportion for 3 notebooks
5 / 7.50 = 3 / x
X = $4.50
Solve for k
K/17 = 20/68
K = 5
3 quarts of milk cost $2.97 set up
and solve a proportion for 7 quarts of milk
3 / 2.97 = 7 / x
X = $6.93
Solve for X
6
5
x
18
15
21
X = 7
Solve for X
x
4 6
9
X = 6
Set up proportion and solve for x
3
x
106
X = 5
Draw a picture to solve the following a tree casts a shadow 33 ft
long you are 4 ft tall and cast a shadow 6 ft how
tall is the tree?
4/6 = x/33
x = 22
Draw a picture to solve the following a tree casts a shadow 18 ft
long and is 12 ft tall a mailbox is 1 ft tall how
long is its shadow?
12/18 = 1/x
x = 1.5
On a map 1 cm is equal to 20 miles, how many miles is
6 cm?
120 miles
On a map 1 cm is equal to 31 miles, how many miles
apart are two cities that measure 5 cm?
155 miles
On a map 1 cm is equal to 8 miles, how many miles
apart are two cities that measure 7 cm?
56 miles
On a map .5 cm is equal to 15 miles, how many miles
apart are two cities that measure 3.5
cm?
105 miles
On a map .75 cm is equal to 10 miles, how many miles
apart are two cities that measure 7.5
cm?
100 miles
Make your wager
Solve the following in lowest terms
(2 ¾ - 1 ½) / 2 1/8
10/17