5.7 Converting Measures

Converting Measures

​TO DO:

1.) Please take out a sheet of notebook paper.

2.) ​

Key idea

A conversion factor is a rate that equals 1

converting units

1.) Convert 36 quarts to gallons ( 1 gal = 4 qt)

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How to solve? Make a table​

converting units

2.) Convert 20 cm to inches ( 1 in = 2.54 cm)

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Multiple Choice

48 ft = ____yd

(3ft = 1yd)

• 12 yd

• 16 yd

• 20 yd

• 10 yd

explanation and work

Multiple Choice

7 lb = _____oz

(16oz = 1lb)

• 50 oz

• 100 oz

• 112 oz

• 150 oz

explanation and work

Multiple Choice

25kg $$\approx$$  ____________ lb

( $$\approx$$  2.2 lb = 1kg)

• 35 lb

• 40lb

• 55 lb

• 45 lb

explanation and work

Comparing units

When comparing units, make sure the the units are THE SAME. You will need to do conversions before you compare.

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Problem: Complete the statement using < or > : 25oz_____2kg

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FIRST: Convert 25oz to kilograms ​(to make the units the same)

You will need to do 2 conversions. 16 oz = 1 lb AND 0.45 kg = 1 lb ​

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Look at the next slide to see the work...​

​FIRST: Convert 25oz to kilograms ​(to make the units the same)

You will need to do 2 conversions. 16 oz = 1 lb AND 0.45 kg = 1 lb ​

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changing units

How many liters does the human heart pump per minute? The human hear pumps 5 quarts of blood per minute.

​(1 qt = 0.95 L)

changing BOTH units

You are riding on a zip line. Your speed is 15 miles per hour. What is your speed in feet per second? You will need to make two conversions

(1 mi= 5,280 ft) (1 hr = 3,600 sec)

Multiple Choice

Compare: 7 cm ____ 3in

(1 in = 2.54cm)

• <

• >

• =

Multiple Choice

3 oz _____70 g

( 1 ounce = 28.3 grams)

• <

• >

• =

Multiple Choice

An oil tanker is leaking oil at a rate of 300 gallons per minute. What is this rate in gallons per second?

• 5 gallons per second

• 10 gallons per second

• 15 gallons per second

• 20 gallons per second