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1. Lesson 8
Obj: Students will learn to convert a variety of units.

2. Abbreviations
Customary
in Inches oz Ounces
ft Feet pt Pints
yd Yards gal Gallons
mi Miles lb Pounds
Metric
mm Millimeters mL milliliters
cm Centimeters L Liters
m Meters g grams
km Kilometers kg Kilograms

3. Cheat Way
Big to Small = Times X
Small to Big = Divide ÷

4. Big to Small = X
Small to Big = ÷
72 in = ___ft 2 tons = _____lbs
12in = 1 ft 2000lbs = 1 ton
Small to Big = ÷ Big to Small = x
4 qt = ____pts 15840ft = ____mi
2pts = 1 qt 5280 ft = 1 mi
Big to Small = X Small to Big = ÷
300 cm = _____m 5 kg = _____g
100 cm = 1 m 1 kg = 1000g
Small to Big = ÷ Big to Small = X

5. My Turn
 A cheetah named Bronson ran at a rate of 105,600 yards
per hour. How fast did Bronson the cheetah run in miles
per hour?
105600 yd = ___________mi Small to big so ÷
1760 yd = 1 mi

6. Still my turn
 An elephant can charge at speeds of about 25 miles per
hour. How fast can the elephant Sarah was riding
charge in feet per hour?
25mi = ____ft big to small, so X
5280 ft = 1 mi

7. Your Turn
 Alyssa’s mourning dove can reach speeds up to 35mph.
How fast is this in feet per hour?
35mi = ______ft
5280 ft = 1 mi

8. Again
 Grayson’s interior wall measures 4.5 yd by 3.25 yd.
What is the size of the wall in square feet?
 14.624 sq yds = _______sq ft
3ft = 1yd
9 sqft = 3 sqyd

9. And again
 Andie has a small bag containing 50 cubic centimeters of
potting soil. Her planter has a volume of 46,300 cubic
mm. Does Della have enough soil to fill the planter?
50푐푚3 ?=? 46,300 푚푚3
1cm = 10mm
1푐푚3= 1000푚푚3

10. again
 Johnathan just returned from London. He has 16 British
pounds to convert to American dollars. If the exchange
rate is 1pd = $2.016, what is the value of Johnathan’s
16 pounds in U.S. dollars?
16lbs = _______$

11. another
 Colby’s gym measures 8.5m by 14m. He bought mats
to cover the floor. Each mat is 110 푐푚2. If 95 mats
were purchased, are there enough mats to cover the
floor?
 L X W 8.5 X 14 = 119 square meters
 1m = 100cm 1푚2 = 100,000푐푚2

12. Last one
 Sadie is filling up her swimming pool. The hose used to
fill up the pool has a flow rate of 41,472푖푛3. The volume
of the pool is 1,104 푓푡3. How many hours will it take
Sadie to fill up the pool?
41472푖푛3 = ______푓푡3
1ft = 12 in 1푓푡3 = 1728푖푛3