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Lesson 1 Contents Objective #1: Write Ratios as fractions in simplest form Example 1Write Ratios as Fractions Example 2Write Ratios as Fractions Objective #2: Determine unit rates Example 3Find Unit Rate Example 4Convert Rates

Lesson 1 Contents Practice and apply Objective #1: Write Ratios as fractions in simplest form odd, (alt. 17, 21, 23) Objective #2: Determine unit rates odd, 37, 47, (Alt. 29, 33, 47) Maintaining Your Skills 54-64

Example 1-1a Express the ratio 10 roses out of 12 flowers as a fraction in simplest form. Divide the numerator and denominator by the GCF, 2. The ratio of roses to flowers is 5 to 6. This means that for every 6 flowers, 5 of them are roses. Answer: Obj.#1: Write Ratios as fractions

Example 1-2a Express the ratio 21 inches to 2 yards as a fraction in simplest form. Convert 2 yards to inches. Written in simplest form, the ratio is 7 to 24. Answer: Divide the numerator and denominator by the GCF, 3. Obj.#1: Write Ratios as fractions

Example 1-1b Obj.#1: Write Ratios as fractions

Example 1-1b Express the ratio 8 golden retrievers out of 12 dogs as a fraction in simplest form. Answer: Obj.#1: Write Ratios as fractions

Example 1-2b Express the ratio 4 feet to 18 inches as a fraction in simplest form. Answer: Obj.#1: Write Ratios as fractions

Example 1-3a Shopping A 12-oz bottle of cleaner costs $4.50. A 16-oz bottle of cleaner costs $6.56. Which costs less per ounce? Find and compare the unit rates of the bottles. Divide the numerator and denominator by 12 to get a denominator of 1. For the 12-oz bottle, the unit rate is $0.38 per ounce. Obj. #2: Find unit rate

Example 1-3b Divide the numerator and denominator by 16 to get a denominator of 1. For the 16-oz bottle, the unit rate is $0.41 per ounce. Answer: The 12-oz bottle has the lower cost per ounce. Obj. #2: Find unit rate

Example 1-4a Animals A snail moved 30 feet in 2 hours. How many inches per minute did the snail move? You need to convert to. There are 12 inches in 1 foot and 60 minutes in 1 hour. Write 30 feet in 2 hours as.. Obj. #2: Find unit rate

Divide the common factors and units.. Example 1-4b Convert feet to inches and hours to minutes.. The reciprocal of is.. Obj. #2: Find unit rate

Example 1-4c Simplify. Answer:30 feet in 2 hours is equivalent to 3 inches per minute. Obj. #2: Find unit rate

Example 1-3c Obj. #2: Find unit rate

Example 1-3c Shopping A 6-pack of a soft drink costs $1.50. A 12-pack of a soft drink costs $2.76. Which pack costs less per can? Answer: The 12-pack costs less per can. Obj. #2: Find unit rate

Example 1-4d Jogging Dave jogs 2 miles in 22 minutes. How many feet per second is this? Answer:This is 8 feet per second. Obj. #2: Find unit rate

End of Lesson 1