2. Main Idea and New Vocabulary NGSSS
Key Concept: Measurement Conversions
Example 1: Convert Measures
Example 2: Convert Between Systems
Example 3: Convert Between Systems
Five-Minute Check
Lesson Menu

3. Convert customary and metric units of length, weight or mass, capacity, and time.
unit ratio
Main Idea/Vocabulary

4. MA.8.G.5.1 Compare, contrast, and convert units of measure between different measurement systems (US customary or metric (SI)) and dimensions including temperature, area, volume, and derived units to solve problems.
Also addresses MA.8.A.6.4
NGSSS

5. Key Concept

6. Since 1 kg = 1,000 grams, multiply by .
Convert Measures
SHIPPING Cristos is shipping a package of model train parts. The package weighs 900 grams. What is the weight of the package in kilograms?
Since 1 kg = 1,000 grams, multiply by
Divide out common units, leaving the desired unit, kilograms.
Example 1

7. Answer: The package weighs 0.9 kilogram.
Convert Measures
Multiply.
Answer: The package weighs 0.9 kilogram.
Example 1

8. RUNNING Jacob ran a race that was 3 miles long
RUNNING Jacob ran a race that was 3 miles long. How long was the race in feet?
A. 15,840 ft
B. 10,560 ft
C. 5,280 ft
D. 3,000 ft
Example 1 CYP

9. Key Concept 2

10. Convert Between Systems
Complete the conversion. Round to the nearest hundredth. 10 mi ≈ __ km
Method 1
Use 1 km ≈ mi.
Since 1 km ≈ mi, multiply by
Divide out common units, leaving the desired unit, kilometer.
Example 2

11. Convert Between Systems
Multiply.
Method 2
Use 1 mi ≈ km.
Since 1 km ≈ mi, multiply by
Divide out common units, leaving the desired unit, kilometer.
Example 2

12. Convert Between Systems
Answer: So, 10 miles is approximately kilometers.
Example 2

13. Complete the conversion. Round to the nearest hundredth. 4 L ≈ __ qt
B. 3.78
C. 4.23
D. 8.46
Example 2 CYP

14. Convert Between Systems
Complete the conversion. Round to the nearest hundredth. 3 gal ≈ __ L
Method 1
Use 1 L ≈ gal.
Since 1 L ≈ gal, multiply by
Divide out common units, leaving the desired unit, liter.
Example 3

15. Convert Between Systems
Multiply.
Method 2
Use 1 gal ≈ L.
Since 1 gal ≈ L, multiply by
Divide out common units, leaving the desired unit, liter.
Example 3

16. Convert Between Systems
Answer: 3 gallons is approximately liters.
Example 3

17. Complete the conversion. Round to the nearest hundredth. 250 g ≈ __ ozB
C. 7,087.50
D. 7,142.86
Example 3 CYP

18. Complete. 112 mm = __ m A B
C. 1.12
D. 11.2
Five Minute Check 1

19. Complete. 4 gal = __ qt
A. 1
B. 8
C. 16
D. 32
Five Minute Check 2

20. Complete the conversion. Round to the nearest hundredth if necessary
Complete the conversion. Round to the nearest hundredth if necessary. 6 L ≈ __ pt A
B. 6.34
C. 2.84
D. 1.58
Five Minute Check 3

21. Complete the conversion. Round to the nearest hundredth if necessary
Complete the conversion. Round to the nearest hundredth if necessary. 120 lb ≈ __ kg
A. 4.23 B C D
Five Minute Check 4

22. Students created a car that moved using a mousetrap
Students created a car that moved using a mousetrap. Julia, Chris, Ben, and Anne each ran a test trial. The table shows each of their measurements. Which of the following shows the correct order of the distances, from least to greatest?
A. 684 cm, 300 in., 8 m, 28 ft
B. 8 m, 28 ft, 300 in., 684 cm
C. 300 in., 8 m, 684 cm, 28 ft
D. 28 ft, 8 m, 300 in., 684 cm
Five Minute Check 5