Objective Make unit conversions Fill in the Missing Numbers 1 foot inches 1 meter centimeters 1 pound ounces 1 minute seconds 1 hour minutes 1 day seconds ID: 644599
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Slide1
Using the Conversion Factor
Objective: Make unit conversionsSlide2
Fill in the Missing Numbers
1 foot = _____ inches
1 meter = _____ centimeters
1 pound = _______ ounces1 minute = ______ seconds1 hour = ________ minutes1 day = __________ seconds
12
100
16
60
60
86,400Slide3
Unit conversion factor
A
unit conversion factor
is a fraction whose numerator and denominator are equivalent measures. Some common unit conversion factors are given below. You can also use the reciprocal of these.
1 ft
? in.
1 yd
? ft
1 mi
? ft
1lb
? oz
1 pt
? c
1 qt
? pt
1 gal
? qt
1 hr
? min
1 min
? s
1m
? cm
1km
? mSlide4
Unit conversion factor
A
unit conversion factor
is a fraction whose numerator and denominator are equivalent measures. Some common unit conversion factors are given below. You can also use the reciprocal of these.Slide5
Choose a unit conversion factor that…
Introduces the unit you want in the answer
Cancels out the original unit so that the one you want is all that is left.Slide6
“Canceling” out WordsSlide7
Practice: Choose the appropriate conversion factor.
Inches to feet
Minutes to hours
Meters to centimetersSlide8
Convert 8 yards to feet…
Make a decision
: What conversion factor will you use?
Hint!
Use the one that will
cancel out the units you want to change
Set up the problem: Multiply the measurement by the conversion factor.
Solve the problem
: Perform the multiplicationSlide9
A bucket holds 16 quarts. How many gallons of water will fill the bucket? Use a unit conversion factor to convert the units.
What are the two conversion factors comparing quarts and gallons?
Which one will “cancel” quarts?
16 qt
Slide10
You Try it!
One bag of apples weighs 64 ounces. How many pounds does it weigh?
Darren drank 2 liters of water. How many milliliters of water did he drink?Slide11
Making Rate Conversions
Use a unit conversion to convert the units within each rateSlide12
Convert 80 miles per hour to feet per hour.
Convert 63,360 feet per hour to miles per hour.Slide13
You Try it!
Convert 32 feet per second to inches per second.
A craft store charges $1.75 per foot for lace. How much per yard is this?Slide14
Word Problems
The average American eats 23 pounds of pizza per year. Find the number of ounces the average American eats per year.
The average American eats 368 ounces of pizza per year.Slide15
General Math click
here
Pre-Algebra click
hereSlide16
General Math Homework
Do Practice worksheet for tomorrow.Slide17
Word Problems…
A car traveled 60 miles on a road in 2 hours. How many feet per second was the car traveling?
Hint: Set up the words first.
How many seconds in an hour?
The car traveled 44 feet per second.Slide18
Homework
Complete Practice Worksheet B