Embed Size (px)
Citation preview
Seciton 1.1 Imperial Measurements Notessoln.notebook
1
September 13, 2017
Sep 410:13 PM
Unit 1: Measurement
Aug 412:51 PM
What is measurement ?
How do we measure ?
What are some commonly used measurement units ?
Seciton 1.1 Imperial Measurements Notessoln.notebook
2
September 13, 2017
Sep 512:25 PM
Two main systems of measurement:
Imperial Units SI System (Metric System)
• Base unit is meter• Canada's Official measurement system
• Used for: Speed limit, Olympics
• Not a base ten unit• USA's Measurement System• Used for: Construction, Sports
Sep 512:19 PM
Section 1.1: Imperial Measures of Length
Introduction - Video
Seciton 1.1 Imperial Measurements Notessoln.notebook
3
September 13, 2017
Sep 77:26 PM
http://www.youtube.com/watch?v=lZ3Ec1p93PA&feature=player_detailpage
(Video on tape measure...stop video and explain the 16ths etc on smart board with pens)
How to use a Measuring Tape
Sep 87:16 PM
Fill in each measurement in inches and fractions of an inch.
You Try!
A. _________ B. ___________
C. _________ D.____________
Seciton 1.1 Imperial Measurements Notessoln.notebook
4
September 13, 2017
Sep 109:15 PM
https://www.youtube.com/watch?v=P9sYvDCnI0g
Sep 77:11 PM
Imperial System
Imperial Unit Abbrev. Referent Relationship
Inch (smallest) in.Thumb lengthThickness of a hockey puck
Foot ft. standard floor tile in classroom 1 ft. = 12 in.
Yard yd.
Arm span from tip of nose, yard stick, length of a
guitar
1yd. = 3 ft. = 36 in.
Mile mi.
Distance walked in 20 minutes, lights to railway
crossing
1 mi. = 1760 yd1 mi. = 5280 ft.
(3 x 1760)1 mi. = 5280 in.
Referent An object that can be used to help estimate a measurement.
Seciton 1.1 Imperial Measurements Notessoln.notebook
5
September 13, 2017
Sep 410:52 PM
To Convert measurements from one unit to another we can use 2 methods:
1. Multiply or divide by the appropriate conversion factor.2. Use Unit Analysis.
Largest Unit Mile
Yard Foot Inch
Smallest Unit
DivideMultiply
Therefore,
To convert from a larger unit to a smaller unit, we multiply.
To convert from a smaller unit to a larger unit, we divide.
Method 1: Multiply/Divide by Conversion Factor
Sep 77:49 PM
Examples:
1. Convert
A. 3 feet to inches B. 8 yards to feet
C. 48 inches to feet D. 87 ft. to yd.
E. 288 in. to yd.
Remember the conversion factors
Seciton 1.1 Imperial Measurements Notessoln.notebook
6
September 13, 2017
Sep 310:47 PM
2. Convert.
a) 12 miles, 15 yards, 4 feet to feet
b) 31 yards, 12 feet, 2 inches to inches
Multiple Step Problems
Sep 310:46 PM
3. Convert 61 in. to:
A) feet and inches B) yards, feet, and inches
Seciton 1.1 Imperial Measurements Notessoln.notebook
7
September 13, 2017
Sep 78:07 PM
4. Convert:
A. 574 in. to yards, feet, and inches
B. 7390 ft. to miles, yards, and feet
Sep 411:03 PM
A) 51 feet to inches
We can write the relationship between feet and inches as a fraction in 2 ways:
and These are called conversion factors.
1. Convert the following measurements using unit analysis.
B) 29 920 yards to miles
Method 2: Unit Analysis
Video on Unit Analysis
Seciton 1.1 Imperial Measurements Notessoln.notebook
8
September 13, 2017
Sep 113:49 PM
2. Convert the following measurements.
A) 7 feet 9 inches to inches
B) 428 feet to yards and feet
C) 6890 feet to miles, yards and feet
D) 420 in. to yards, feet and inches
Sep 78:07 PM
3. The school has 20 yds fabric that will be cut into 7 inch strips to make banners for a sports meet. How many banners can be made?
20 yd.7 in.
Seciton 1.1 Imperial Measurements Notessoln.notebook
9
September 13, 2017
Sep 78:21 PM
4. Alice is putting a border around the walls of a rectangular rec room with dimensions 14 ft. 8 in. by 10 ft. 3 in. half way up the wall. The room has one door and its width is 2 ft. 6 in.
A) What is the total length of border needed?
B) If the border is sold in 96 in. strips, and sells for $4.89 per strip, determine the total cost of the border needed.
Sep 78:47 PM
Assign: Page 11 3, 4, 5, 7, 8, 9, 10, 11, 14, 15
Seciton 1.1 Imperial Measurements Notessoln.notebook
10
September 13, 2017
Sep 43:40 PM
