Transcript Unit Rates and Proportional Reasoning

Rates and Unit Rates
with Proportional
Reasoning
Rate – is a ratio that compares two
quantities measured in
DIFFERENT UNITS
 50
minutes & 2 miles
 450 miles &15 gallons
 120 words & 5 minutes
 50 yards & 42 seconds
 50
minutes/2mile
 450 miles/15gallon
 120 words/5minute
 50 yards/42 secs
Unit rate - is a rate that has a
denominator of 1
340 miles - 20 gallons
17 miles/gal
$350 – 35 hrs
$10 /hr
1,500 miles – 25 hrs
60 miles/hr
$210 – 50 ounces
$4.20 / oz
Determine The Better Buy
 Juice
 Juice
18 oz for $1.26
8 oz for $.70
1.26/18= $.07 per oz
.70/8 = $.0875 per oz
 Cloth
 Cloth
2 yd for $3.15
6 yd for $7.78
3.15 / 2 = $1.575 per yd
7.78 / 6 = $1.296 per yd
Determine The Better Buy
 Socks
 Socks
2 pair for $2.99
6 pair for $9.97
2.99/2 =$1.49 per pair
9.97 / 6 =$1.67 per pair
 Cereal
 Cereal
10.2 oz for $5.98
16 oz for $9.95
5.98 / 10.2 =$.58 per oz
9.95 /16 = $.62 per oz