Unit Conversion
If there are 100 cm in 1 meter, which unit is larger: the centimeter or the meter?
Meters are larger because it takes fewer of them to make up the same space.
Unit rate means the amount per one.
How do you get to a unit rate from an equivalent ratio?
Multiply or divide all parts by the same quantity to get to an equivalent amount per 1.
Percent means the amount for each ____________.
Hundred.
x / 100
50 cents is x% of 100 cents?
What is x?
x = 10%
Use your conversion chart to answer these questions.
How many kilometers are in 1 mile?
How many kilometers are there in 5 miles?
Record the correct quantity and unit to get credit.
1 mi = 1.6 km
5 mi = x km
x = 5 * 1.6
x = 8 km
1 inch = 2.54 centimeters
How many centimeters is equivalent to 50 inches?
Record the correct quantity and units to get credit.
2.54 x 50 =
2.54 x 10 x 5
2.54 x 10 = 25.4
25.4 x 5 = 127 centimeters
To find 40% of 140 I can find the benchmark fraction 10% 4 times.
What is 40% of 140?
1/10 of 140 = 14
4 x 14 = 56
40% of 140 is 56
What is x?
x = 25%
60 is 25% of 240
If there are 128 ounces in 1 gallon?
How many ounces are there in 1/4 gallon?
Record the correct quantity and unit to get credit.
128 ounces / 4 = 32 ounces
If 75 mL of PRIME is worth $5, what is the unit rate of Prime for $1?
**Set up a proportional equation or ratio table to get to your unit rate**
Record the correct quantity and unit to get credit.
75 mL : $5
x : $1
5 / 5 = 1
so...
75 / 5 = x
75 / 5 = 15
15 mL of PRIME is $1
What is 75% of 400?
75% = 75/100
75/100 = 3/4
3/4 x 400 = (400 x 3) / 4
1200 / 4 = 300
75% of 400 is 300
If you made $150 in a day, what percentage more is that than if I made $75 in a day?
$75 = 100%
$150 = x%
75/100 = 150/x
75x = 15000
x = 200%