CONFIDENTIAL 1

Today we will review “Measurement”

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Let’s Warm up

1) ¼ + ½ =

2) 3/5 – 1/5 =

3) 3/8 + 3/8 =

4) 5/8 – 10/16 =

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Customary Units of Length

Nonstandard units of measure give approximate dimensions. Everyday objects are used as units of measure. It can be used to measure length, height and width. The desk is as long as 6 of my hands

Length: The measurement of distance between 2 endpoints. The length of my arm is 18 inches

Height: The measurement of distance from bottom to top. Her height is 68 inches

Width: The measurement of distance from side to side. The width of the stripe is 2 inches

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Try This!

Use your hands to find the length of the computer monitor

Use nonstandard units to measure the length of a pencil

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Explore Customary Length to ¼ inch

An inch (in.) is used to measure short lengths in the customary system.

You can use a ruler, yardstick or tape to measure in inches.

0 1 2 3

CRAYON .4

13 in

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Explore Customary Length to ¼ inch

The foot (ft) and yard (yd) are used to measure larger units in the customary system.

1 yd

1 ft

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Explore Customary Length to ¼ inch

Customary Units of Length

1 foot (ft) = 12 inches (in.)

1 yard (yd) = 3 feet (ft)

1 mile (mi) = 1,760 yards (yd)

1 mile (mi) = 5,280 feet (ft)

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Try This!

Measure the length of your forearm

Measure the length of a book

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Customary Units of Capacity

Capacity: A measure of a dry or liquid volume of a container.

The container has a capacity of 1 gallon A coke drink is about 12 fluid ounces. A regular cup of coffee is about one cup. A can of oil for the car is about one quart. A large milk container is about a gallon.

Customary Units of Capacity

8 fluid ounces (fl. oz) = 1 cup (c)

2 cups (c) = 1 pint (pt)

2 pints (pt) = 1 quart (qt)

4 quarts (qt) = 1 gallon (gal)

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Try This!

What unit would you use to measure the capacity for each? A bathtub A soup bowl A paper cup

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Customary Units of weight

Weight: A customary measurement that tells how heavy an object is. The dog’s weight is 12 pounds A strawberry’s weight is 1 ounce (oz) A pineapple’s weight is 1 pound (lb) A car’s weight is 1 ton (T)

Customary Units of Weight

16 ounces (oz) = 1 pound (lb)

2,000 pounds (lb) = 1 ton (T)

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Try This!

What unit would you use to measure the weight for each? A math book An elephant A paper napkin

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Simple conversions with Customary Units

Convert: Change from one unit to another, such as from feet to inches.

Change Larger to Smaller units To change to a smaller unit, multiply. Example: How many inches are in 6 feet?

12 inches = 1 foot 6 feet = 6 x 12 = 72 inches

Change Smaller to Larger units To change to a smaller unit, divide. Example: How many feet is 48 inches?

1 foot = 12 inches 48 inches = 48 ÷ 12 = 4 feet

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Try This!

How many quarts is 4 gallons?

How many pounds is 560 ounces?

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Simple Conversion Tables

Inches Feet Yards

12 1

24 2

36 3 1

48 4

60 5

72 6 2

84 7

96 8

108 9 3

Feet Yards Miles

5,280 1,760 1

10,560 3,520 2

15,840 5,280 3

Cups Pints Quarts Gallons

2 1

4 2 1

6 3

8 4 2

10 5

12 6 3

14 7

16 8 4 1

Ounces Cups Pounds

8 1

16 2 1

24 3

32 4 2

40 5

48 6 3

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Metric Units of Length

Centimeters (cm), millimeters (mm), decimeters (dm), and kilometers (km) are used to measure length in the metric system

Metric Units of Length

10 millimeters (mm) = 1 centimeter (cm)

10 centimeters (cm) = 1 decimeter (dm)

100 centimeters = 1 meter (m)

1,000 meters = 1 kilometer (km)1 cm1 mm

1 dm

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Estimate

Estimate: An answer that is close to the exact answer. 12 x 779 = 9,348 12 x 800 = 9,600 Estimate

Estimate is used to get an idea of how large the object is; to pick appropriate units

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Try This!

Estimate and then measure. Tell what unit and tool you use. The width of your room

The largest step you can take

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Metric Units of Capacity

Capacity: A measure of a dry or liquid volume of a container. Ounces are customary

units of measurement Milliliters are metric units

Metric Units of Capacity

1,000 milliliters (mL) = 1 liter (L)

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Try This!

Estimate and then measure the capacity of each object. A juice box

A spoon

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Metric Units of Mass

Mass: Amount of matter an object has.

The mass of a math book is 1 kilogram.

Customary Units are used in US

Metric Units are used by most countries

Metric Units of Mass

1,000 grams (g) = 1 kilogram (kg)

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Try This!

Estimate and then measure the mass of each object. A bicycle A pair of sneakers

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Convert Metric Units

Metric Units

Length 1 centimeter (cm) = 10 millimeters (mm)

10 centimeters (cm) = 1 decimeter (dm)

10 decimeters (dm) = 1 meter (m)

1,000 meters (m) = 1 kilometer (km)

Mass 1 kilogram (kg) = 1,000 grams (g)

1 gram (g) = 1,000 milligrams (mg)

Capacity 1 liter (L) = 1,000 milliliters (mL)

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Convert Metric Units

Change Larger to Smaller units To change to a smaller unit, multiply. Example: How many centimeters are in 10 meters?

1 m = 100 cm 10 meters = 10 x 100 = 1,000 cm

Change Smaller to Larger units To change to a smaller unit, divide. Example: How many kilograms are in 5,000 grams?

1,000 g = 1 kg 5,000 ÷ 1,000 = 5

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Try This!

5 m = __ cm

5,000 g = __ kg

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Let us take a break!

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Game

Click me

Let us see how fast you are on this one!

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Assessment

1. Use nonstandard units to measure. Tell what units you use.1. The length of your pencil

2. The length of your shoe

2. Use customary units to measure. Tell what unit and tool you use.1. Length of your forearm

2. Width of the window in your room

3. What unit you will use to measure the capacity of a frying pan.

4. What unit would you use to measure the weight for eyeglasses.

5. How many pounds is 2 tons?

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Assessment

6. Alberto makes 8 quarts of punch. How many gallons does he have?

7. Estimate and then measure using the metric system. Tell what unit and tool you use.1. Your height

8. Estimate and then measure using the metric system the capacity of a can of soda.

9. Estimate and then measure using the metric system the mass of a granola bar.

10. How many milliliters are in 3 Liters?

CONFIDENTIAL 30

Good Job!

You have learned a lot today!!!