1. Splash Screen

2. Over Lesson 6–2 5-Minute Check 1 Fill in the blanks: 1 km = ______________m 1 m = ______________cm 1 m = ______________ mm 1cm = ______________ mm Express the ratio 6 feet to 15 inches as a fraction in simplest form. (Review of Lesson 6-1) Express the rate $10 for 8 fish as a unit rate. (Review of Lesson 6-2)

3. Over Lesson 6–2 5-Minute Check 1 Express the ratio 6 feet to 15 inches as a fraction in simplest form. (Review of Lesson 6-1)

4. Over Lesson 6–2 5-Minute Check 1 Express the rate $10 for 8 fish as a unit rate. (Review of Lesson 6-2)

5. Over Lesson 6–2 5-Minute Check 1 Fill in the blanks: 1 km = ______________m 1 m = ______________cm 1 m = ______________ mm 1cm = ______________ mm

6. Then/Now You have already learned to find unit rates. (Lesson 6–2) Convert rates using dimensional analysis.

7. Vocabulary dimensional analysis – the process of including units of measurement when computing

8. Concept

9. Example 3 Convert Measurements Between Systems A. Convert 3 liters to cups. Round to the nearest hundredth. You have to convert liters to cups, but there is no conversion rate for liters to cups, so you need to use 1 liter ≈ 2.114 pints and 1 pint = 2 cups. Convert from liters to pints and then pints to cups. Divide out common units, leaving cups. Simplify. 3 L ≈ ≈ 12.68 cups Answer: So, 3 liters is approximately 12.68 cups. 3 L 1 x 2.114 pt 1 L x 2 c 1 pt

10. Example 3 Convert Measurements Between Systems B. Convert 7 kilometers to feet. Use 1 km = 1000 m and 1 m ≈ 3.279 ft. Divide out common units, leaving feet. Simplify. Answer: So, 7 kilometers is approximately 22,953 feet. 7 km ≈ 7 km 1 x 1000 m 1 km x 3.279 ft 1 m ≈ 22,953 feet

11. Example 3 A.20.32 mm B.203.2 mm C.2032 mm D.3.89 mm A. About how many millimeters are equal to 8 inches?

12. Example 3 A.602 lbs B.78,571 lbs C.6.02 lbs D.96.25 lbs B. About how many pounds are equal to 2750 grams?