measurement activities virginia standards of learning grade 4 sol 4.10 a, b, c

Measurement Activities

Virginia Standards of LearningGrade 4

SOL 4.10 a, b, c

SOL 4.10 aEstimate 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 STUDENTSEstimating 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 grams4 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

A. 40

B. 80

C. 120

D. 140

1 ounce

“about”

30 grams

2 ounces 60

3 ounces 90

4 ounces 120

5 ounces 150

6ounces 180

How can we use the calculator to

solve this problem?

• Estimate conversions between U.S. Customary and metric units, using ballpark comparisons:

1 ounce is about 28 grams4 ounces is about _____ grams

A. 40

B. 80

C. 120

D. 140

We could multiply the number of

ounces by 30.

We could multiply 28

times 4 and see which choice

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.



A. 6

B. 9

C. 10

D. 12

1 kg

“about”

2 pounds

2 kg 4 pounds

3 kg 6 pounds

4 kg 8 pounds

5 kg 10pounds

6 kg 12 pounds



A. 6

B. 9

C. 10

D. 12

How can we use the calculator to

solve this problem?

We could multiply the number of

kilograms by 2.

An apple that weighs two ounces weighs about 60 grams.

1 ounce is about 28 grams.

A bag of potatoes that weighs 5 kilograms is around 10 pounds.

1 kilogram is a little more than 2 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.

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 grams5 grams

5 grams5 grams

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 MeasurementsWEIGHT

US Customary System

• ounces & pounds

Metric• grams & kilograms

1 pound = 16 ounces

1 kilogram = 1,000 grams


US Customary System

1 pound = 16 ounces

1 pound 16 ounces

2 pounds 32 ounces

3 pounds 48 ounces

5 pounds

8 pounds

9 pounds

If you know the number of pounds,

multiply by 16 to find the

ounces .

Use your calculator to

complete the chart.

1 pound 16 ounces

2 pounds 32 ounces

4 pounds 64 ounces

5 pounds 90 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


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 .


Our pet Rex weighs 192 ounces.

What is his weight in pounds?

Divide the # of ounces

by 16.


Our pet Rex weighs 192 ounces.

What is his weight in pounds?

12 pounds


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.

1

4pound 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 8.One fourth of a pound is the same as 4 ounces.

1



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.

7



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?

14 ounces

Let’s Solve These Same Problems

With a Calculator&

Equivalent Fractions

1


A. 2

B. 3

C. 4

D. 10

1

4

?

16

• Set up equivalent fractions to see which numerator will give you equivalent cross-products.

• Which numerator will make these cross products equal?

=

1 x 16 is the same as ____ x 4?

1


A. 5

B. 6

C. 7

D. 8

1

2

?

16


=



7


A. 14

B. 12

C. 11

D. 10

7

8

?

16=




Let’s Solve Some Problems

With Calculators&

Equivalent Fractions

Metric Units for Weight

grams & kilograms

• 1 Kilogram = 1,000 grams

250 grams is the same as _____ kilograms

1/3 1/4 1/5 1/8

2501,000

Using the answer choices given, cross multiply

to find the

Equivalent Fraction



9/10 7/8 3/4 2/3

9001,000


to find the

Equivalent Fraction



7501,000


to find the

Equivalent Fraction

2/7 7/8 3/4 2/3

measurement activities virginia standards of learning grade 4 sol 4.10 a, b, c

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