Over Lesson 6–2

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)

Over Lesson 6–2

Express the ratio 6 feet to 15 inches as a fraction in simplest form. (Review of Lesson 6-1)

Over Lesson 6–2

Express the rate $10 for 8 fish as a unit rate. (Review of Lesson 6-2)

Over Lesson 6–2

Fill in the blanks:

1 km = ______________m

1 m = ______________cm

1 m = ______________ mm

1cm = ______________ mm

You have already learned to find unit rates. (Lesson 6–2)

• Convert rates using dimensional analysis.

• dimensional analysis – the process of including units of measurement when computing

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 c1 pt

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 ft1 m

≈ 22,953 feet

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?

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?