Measurement: Metric System
Metric Units of Length(how long an object is)
Unit / Model / Benchmark
1 millimeter (mm) / Thickness of a dime / 25 mm ≈ 1 inch
1 centimeter (cm) / Half the width of a penny / 2.5 cm ≈ 1 inch
1 meter (m) / Width of a doorway / 1 m ≈ 1.1 yard
1 kilometer (km) / Six city blocks /
1.6 km ≈ 1 mile
Write the metric unit of length that you would use to measure each of the following:
1) Height of a mountain 2) Thickness of a dried bean
3) Width of an iPhone 4) Length of a pen
5) Height of an adult 6) Height of a table
7) Length of a small town 8) Width of textbook
Answer the following:
9) Harry takes diving lessons at the community pool. He is trying to estimate the depth of the deepest part of the pool. Which is the most likely estimate:
4 centimeters, 4 meters, or 4 kilometers? Explain.
10) Sathvika is planning a trip across the county. She would like to estimate the distance she will travel on her trip. Which is the most likely estimate:
3600 centimeters, 3600 meters, or 3600 kilometers? Explain.
Metric Units of Mass(how much matter an object contains)
Unit / Model / Benchmark
1 milligram (mg) / Grain of salt / 1 mg ≈ 0.00004 oz
1 gram (g) / Small paper clip / 1 g ≈ 0.04 oz
1 kilogram (kg) / Six medium apples / 1 kg ≈ 2 lb
Write the metric unit of mass that you would use to measure each of the following:
11) peanut 12) eyelash 13) elephant
14) cat 15) car 16) pencil
Answer the following:
17) Earl has an ant farm. What metric unit of mass would Earl use to measure one of his ants?
Metric Units of Capacity(how much matter a container can hold)
Unit / Model / Benchmark
1 milliliter (mL) / Eyedropper / 1 mL ≈ 0.03 fl oz
1 liter (L) / Small pitcher / 1 L ≈ 1 qt
Write the metric unit of capacity that you would use to measure each of the following:
18) Serving of salad dressing 19) Large soda bottle
20) Bottle of milk 21) Mug of soup
Answer the following:
22) Jill is making a fish tank that will hold 20 goldfish. What unit of metric measure would she use to decide how much water the tank will hold?