Measurement
Activities
Virginia Standards of Learning
Grade 4
SOL 4.10 a, b, c
SOL 4.10 a
Estimate conversions between U.S.
Customary and metric units, using
ballpark comparisons:
•
•
•
•
•
1 ounce is about 28 grams;
A paper clip weighs about 1 gram
An ounce is about the weight of 10 pennies
1 nickel has the mass of about 5 grams; and
1 kilogram is a little more than 2 pounds.
Note to STUDENTS
Estimating conversions …
• Means you will use rounding and
number sense to solve measurement
problems.
• Finding estimates means you don’t need
the exact numbers.
• Estimate conversions between U.S. Customary and
metric units, using ballpark comparisons:
1 ounce is about 28 grams
4 ounces is about _____ grams
A. 40
B. 80
C. 120
D. 140
Remember you
can
round 28 to 30.
If 1 ounce is about 28 grams…
4 ounces is about _____ grams
“about”
A. 40
B. 80
C. 120
D. 140
1 ounce
30 grams
2 ounces
60
3 ounces
90
4 ounces
120
5 ounces
150
6ounces
180
• Estimate conversions between U.S. Customary and
metric units, using ballpark comparisons:
1 ounce is about 28 grams
4 ounces is about _____ grams
A. 40
B. 80
C. 120
D. 140
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ounces
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fits.
Estimate conversions between U.S. Customary and
metric units, using ballpark comparisons:
• 1 kilogram is a little more than 2 pounds.
3 kilograms is about _____ pounds
A. 6
B. 9
C. 10
D. 12
You can
use a chart
to help you.
Estimate conversions between U.S. Customary and
metric units, using ballpark comparisons:
• 1 kilogram is a little more than 2 pounds.
3 kilograms is about _____ pounds
“about”
A. 6
B. 9
C. 10
D. 12
1 kg
2 pounds
2 kg
4 pounds
3 kg
6 pounds
4 kg
8 pounds
5 kg
10pounds
6 kg
12 pounds
Estimate conversions between U.S. Customary and
metric units, using ballpark comparisons:
• 1 kilogram is a little more than 2 pounds.
3 kilograms is about _____ pounds
A. 6
B. 9
C. 10
D. 12
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kilograms
1 ounce is about 28 grams.
An apple that weighs two ounces
weighs about 60 grams.
1 kilogram is a little more than 2 pounds.
A bag of potatoes that weighs
5 kilograms is around 10 pounds.
• 1 nickel has the mass of about 5 grams
• 1 ounce is about 28 grams
Five nickels weigh
a little less than 1 ounce.
• 1 nickel has the mass of about 5 grams
• 1 ounce is about 28 grams
5 grams
5 grams
5 grams
5 grams
5 grams
Five nickels weigh
a little less than 1 ounce.
SOL 4.10b
Identify equivalent measurements
between units within the U.S.
Customary system (ounces and
pounds)
and between units within the metric
system (grams and kilograms);
Equivalent Measurements
WEIGHT
US Customary
System
• ounces & pounds
Metric
• grams & kilograms
1 pound = 16 ounces
1 kilogram = 1,000 grams
Equivalent Measurements
WEIGHT
US Customary System
1 pound = 16 ounces
1 pound
16 ounces
2 pounds
32 ounces
3 pounds
48 ounces
If you know the number
of pounds,
multiply by 16
to find the
ounces .
5 pounds
8 pounds
9 pounds
Use your
calculator to
complete
the chart.
1 pound
16 ounces
2 pounds
32 ounces
4 pounds
64 ounces
5 pounds
80 ounces
8 pounds
128 ounces
9 pounds
144 ounces
If you know the number
of pounds,
multiply by 16
to find the
ounces .
How would you solve this problem?
Melissa’s puppy
weighs 3 pounds.
What is the puppy’s
weight in ounces?
Multiply
the number
of pounds
by 16
How would you solve this problem?
Melissa’s puppy
weighs 3 pounds.
What is the puppy’s
weight in ounces?
48
ounces
pounds
ounces
1
16
3
48
4
64
96
144
32
112
If you know the number
of ounces,
divide by 16
to find the
pounds .
Use your
calculator to
complete
the chart.
pounds
ounces
1
16
3
48
4
64
6
96
9
144
2
32
7
112
If you know the number
of ounces,
divide by 16
to find the
pounds .
How would you solve this problem?
Our pet Rex weighs 192 ounces.
What is his weight in pounds?
Divide the #
of ounces
by 16.
How would you solve this problem?
Our pet Rex weighs 192 ounces.
What is his weight in pounds?
12
pounds
Equivalent Measurements
WEIGHT
METRIC System
1 kilogram = 1,000 grams
Note to STUDENTS
• Sometimes you will be asked to find a
fraction of a unit of measure.
• Sometimes your answer to
measurement problems will be a
fraction.
pound is the same as ___ounces
•There are 16 ounces in a pound.
•Place 16 objects on your desk in groups
of four—since four is our denominator.
To find your answer,
you would mark one
out of every four
ounces-just like the
fraction says.
That is a total of 4.
One fourth of a pound is
the same as 4 ounces.
pound is the same as ___ounces
•There are 16 ounces in a pound.
•Place 16 objects on your desk in groups
of two—since two is our denominator.
To find your answer,
you would mark 1 out
of every 2 ounces-just
like the fraction
says.
That is a total of 8.
One half of a pound is
the same as 8 ounces.
pound is the same as ___ounces
•There are 16 ounces in a pound.
•Place 16 objects on your desk in groups
of 8—since eight is our denominator.
To find your answer,
you would mark 7 out
of every 8 ounces-just like the
fraction says.
What is the answer to
our problem?
Let’s Solve These Same Problems
•Set up equivalent fractions to see which numerator
will give you equivalent cross-products.
pound is the same as ___ounces
•Which numerator will make these cross products equal?
A. 2
B. 3
C. 4
D. 10
1 x 16 is the same as ____ x 4?
•Set up equivalent fractions to see which numerator
will give you equivalent cross-products.
pound is the same as ___ounces
•Which numerator will make these cross products equal?
A. 5
B. 6
C. 7
D. 8
1 x 16 is the same as ____ x 2?
•Set up equivalent fractions to see which numerator
will give you equivalent cross-products.
pound is the same as ___ounces
•Which numerator will make these cross products equal?
A. 14
B. 12
C. 11
D. 10
7 x 16 is the same as ____ x 8?
Let’s Solve Some Problems
Metric Units for Weight
• 1 Kilogram = 1,000 grams
250 grams is the same as _____ kilograms
1/3
250
1,000
1/4
1/5
1/8
Using the answer choices given,
cross multiply
to find the
Equivalent Fraction
• 1 Kilogram = 1,000 grams
900 grams is the same as _____ kilograms
9/10
900
1,000
7/8
3/4 2/3
Using the answer choices given,
cross multiply
to find the
Equivalent Fraction
• 1 Kilogram = 1,000 grams
750 grams is the same as _____ kilograms
2/7
750
1,000
7/8
3/4 2/3
Using the answer choices given,
cross multiply
to find the
Equivalent Fraction