MEASUREMENT. Measurement I can measure length, capacity, and weight in customary units.
Course 1 9-1 Understanding Customary Units of Measure 9-1 Understanding Customary Units of Measure...
-
Upload
ann-joseph -
Category
Documents
-
view
221 -
download
0
Transcript of Course 1 9-1 Understanding Customary Units of Measure 9-1 Understanding Customary Units of Measure...
Course 1
9-1Understanding CustomaryUnits of Measure9-1 Understanding Customary
Units of Measure
Course 1
Warm UpWarm Up
Lesson PresentationLesson Presentation
Problem of the DayProblem of the Day
Course 1
9-1Understanding CustomaryUnits of Measure
Warm UpSimplify.
28
1.
48
3.
616
2.
1216
4.
14
38
12
34
Course 1
9-1Understanding CustomaryUnits of Measure
Problem of the Day
Maria rented an electric car at a rate of $40 per day and $0.15 per mile. She returned the car the same day, gave the rental clerk a $100 bill, and got $21.75 back in change. How far did Maria drive the car?255 miles
Course 1
9-1Understanding CustomaryUnits of Measure
Learn to understand and select appropriate customary units of measure.
Course 1
9-1Understanding CustomaryUnits of Measure
If you do not have an instrument, such as a ruler, scale, or measuring cup, you can estimate the length, weight, and capacity of an object by using a benchmark. The customary system is the measurement system often used in the United States. It includes units of measurement for length, weight, and capacity.
Customary Units of Length
Unit Abbreviation Benchmark
Inch in. Width of your thumb
Foot ft Distance from your elbow to your wrist
Yard yd Width of a classroom door
mile mi Total length of 18 football fields
Course 1
9-1Understanding CustomaryUnits of Measure
Additional Example 1: Choosing Appropriate Units of Length
What unit of measure provides the best estimate? Justify your answer.
A. A doorway is about 7 _____ high.
B. A calculator is about 6 _____ long.
Think: The height of a doorway is about 7 times the distance from your elbow to your wrist.A doorway is about 7 ft high.
Think: The length of a calculator is about 6 times the width of your thumb.
A calculator is about 6 in. long.
Course 1
9-1Understanding CustomaryUnits of Measure
Check It Out: Example 1
What unit of measure provides the best estimate? Justify your answer.
A. A 4-door sedan is about 5 _____ long.
B. A students desk is about 3 _____ long.
Think: The length of a sedan is about 5 times the width of a classroom door.
A 4-door sedan is about 8 yd long.
Think: The length of a students desk is about 3 times the distance from your elbow to your wrist.
A students desk is about 4 ft long.
Course 1
9-1Understanding CustomaryUnits of Measure
Customary Units of Weight
Unit Abbreviation Benchmark
Ounce oz A slice of bread
Pound lb A loaf of bread
Ton T A small car
Course 1
9-1Understanding CustomaryUnits of Measure
Additional Example 2: Choosing Appropriate Units of Weight
What unit of measure provides the best estimate? Justify your answer.
A. A loaf of bread weighs about 16 _____ .
B. A bike could weigh 20 _____ .
Think: A loaf of bread has a weight of about 16 slices of bread.A loaf of bread weighs about 16 oz.
Think: A bike could have a weight of about 20 loaves of bread.
A bike could weigh 20 lbs.
Course 1
9-1Understanding CustomaryUnits of Measure
Check It Out: Example 2
What unit of measure provides the best estimate? Justify your answer.
A. A black rhino could weigh about 1 _____ .
B. A DVD remote control weighs about 8 ____ .
Think: A black rhino has a weight of about a small car.A black rhino can weigh about 1 T.
Think: A DVD remote control has a weight of about 8 slices of bread .
A DVD remote control weighs about 8 oz.
Course 1
9-1Understanding CustomaryUnits of Measure
Capacity deals with volume, or the amount a container can hold.
Customary Units of Capacity
Unit Abbreviation Benchmark
Fluid ounce fl oz A spoonful
Cup c A glass of juice
Pint pt A small bottle of salad dressing
Quart qt A small container of paint
Gallon gal A large container of milk
Course 1
9-1Understanding CustomaryUnits of Measure
Additional Example 3: Choosing Appropriate Units of Capacity
What unit of measure provides the best estimate? Justify your answer.
A large water cooler holds about 10 _____ t of water.
Think: A large water cooler holds 10 times the amount of a large container of milk.
A large water cooler holds about 10 gal of water.
Course 1
9-1Understanding CustomaryUnits of Measure
Check It Out: Example 3
What unit of measure provides the best estimate? Justify your answer.
A small fish aquarium holds about 20 _____ t of water.
Think: A small fish aquarium holds 20 times the amount of a small container of paint.
A small fish aquarium holds about 20 qt of water.
Course 1
9-1Understanding CustomaryUnits of Measure
Additional Example 4: Estimating Measurements
Estimate the length of the line segment to the nearest half, fourth, or eighth of an inch.
1 2
The line segment is closest to 1 in. 5 8
The length of the line segment is about 1 in.5 8
Course 1
9-1Understanding CustomaryUnits of Measure
Check It Out: Example 4
Estimate the length of the line segment to the nearest half, fourth, or eighth of an inch.
1 2
The line segment is between 1 and 1 in. 1 4
3 8
The length of the line segment is closest to 1 in.1 4
Course 1
9-1Understanding CustomaryUnits of Measure
Lesson QuizWhat unit of measure provides the best estimate?
1. A row boat is 10 _____ long.
2. A skateboard is 30 _____ long.
3. A pair or earphones weighs 4 _____.
4. Drinking water is delivered in 5 _____ bottle.
5. Estimate the length of the line segment to the
nearest half, fourth, or eighth of an inch.
in.
ft
oz
gal
2 in.
1 2