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Chapter 4: Section 1

Chapter 4: Section 1. Ratio and Proportion. Vocabulary. Ratio Comparison of two numbers by division. The ratio of a to b is a:b or , where Rate If a and b represent quantities measures in different units, then the ration of z to b is a rate. Unit Rate A rate with a denominator of 1.

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Chapter 4: Section 1

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  1. Chapter 4: Section 1 Ratio and Proportion

  2. Vocabulary • Ratio • Comparison of two numbers by division. • The ratio of a to b is a:b or , where • Rate • If a and b represent quantities measures in different units, then the ration of z to b is a rate. • Unit Rate • A rate with a denominator of 1. • Example 40miles/1hour; a.k.a. 40 miles/hour

  3. Finding Unit Rates • Find the unit rate for each size container of apple juice. • i. • ii. • iii. • Which of the three sizes has the lowest cost per ounce?

  4. Conversions • Convert the following ratios • $3/lb to cents per ounce • 5 cents/day to $/year • 1 quart/min to gallons/week

  5. Vocabulary cont… • Proportion • An equation that states that two ratios are equal. • Cross products • ad and bc means extremes means extremes

  6. Assignment • Page 185 • Numbers: 2-6even • 11-13 • 30-52 even

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