Objectives Vocabulary Example 1 Example 2 Example 3
Objectives Vocabulary Example 1 Example 2 Example 3 Quick Quiz
• To identify the difference between weight and mass • To measure the mass of an item • To determine the volume of mass an object can hold • To identify and use appropriate units for measuring mass and weight • To convert between different customary units of mass and weight and between different metric units of mass and weight • To use an object’s mass or weight as a benchmark for discussing the mass and weight of other items
• mass • customary system • weight • ounce • pound • ton • gram • metric system
Write the metric unit of mass that you would use to measure a push pin. Then estimate the mass. A push pin has a mass greater than one small paper clip, but less than six apples. Estimate A push pin is a little heavier than a paper clip. Answer: So, the gram is the appropriate unit. One estimate for the mass of a push pin is 2 grams.
Which is the best estimate for the mass of a pencil? A. 2 mg B. 10 mg C. 10 g D. 1 kg 1. 2. 3. 4. A B C D
Write the metric unit of mass that you would use to measure a medium-sized dog. Then estimate the mass. A medium-sized dog has a mass greater than six medium apples. Answer: So, the kilogram is the appropriate unit. One estimate for the mass of a medium-sized dog is 10 kg.
Which is the best estimate for the mass of a bicycle? A. 100 mg B. 20 g C. 2 kg D. 20 kg 1. 2. 3. 4. A B C D
ELEPHANTS An adult male elephant weighs 11, 000 pounds. How many tons is this? 11, 000 lb = ■ T THINK 2, 000 pounds = 1 ton 11, 000 ÷ 2, 000 = Divide to change pounds to tons. Answer: So, 11, 000 pounds
BOULDER A boulder in a national park is estimated to weigh 4, 000 pounds. How many tons is this? A. 2 T B. 4 T C. 1, 000 T D. 2, 000 T 1. 2. 3. 4. A B C D
How many hectograms are there in 1. 45 × 104 milligrams? A. 0. 145 hectograms B. 145 hectograms C. 14. 5 hectograms D. 1. 45 hectograms 1. 2. 3. 4. A B C D
How much mass would a book have? A. about 2. 5 kilograms B. about 250 kilograms C. about 0. 25 kilograms D. about 2, 500 kilograms 1. 2. 3. 4. A B C D
If 10 sheets of construction paper has a mass of about 80 grams, how many sheets of paper are there in 2. 5 kilograms? A. about 1, 000 sheets B. about 313 sheets C. about 32 sheets D. about 200 sheets 1. 2. 3. 4. A B C D
A ream of construction paper contains 500 sheets. What is the mass of the ream of paper? A. about 4, 000 kilograms B. about 12. 5 kilograms C. about 4 kilograms D. about 125 kilograms 1. 2. 3. 4. A B C D
A loaf of bread requires 5 pounds of flour. About how many cups of flour will you use? A. 5 cups B. 10 cups C. 80 cups D. 20 cups 1. 2. 3. 4. A B C D
What is the most appropriate unit to use to record the weight of a case of oranges? A. pounds B. tons C. ounce D. gram 1. 2. 3. 4. A B C D
Image Bank Math Tools Multilingual e-Glossary Using a Net to Build a Cube
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