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

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

Cheat Way

Big to Small = Times X

Small to Big = Divide

Big to Small = XSmall 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

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

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

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

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

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?

50 ?=? 46,300

1cm = 10mm

1= 1000

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 = _______$

another

Colby’s gym measures 8.5m by 14m. He bought mats to cover the floor. Each mat is 110 . 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 1 = 100,000

Last one

Sadie is filling up her swimming pool. The hose used to fill up the pool has a flow rate of 41,472. The volume of the pool is 1,104 . How many hours will it take Sadie to fill up the pool?

41472

1ft = 12 in 1 = 1728