5.4 Quiz Review

5.4 Quiz Review

5.1 Ratios and Rates

• Ratio: a comparison of two numbers Where order matters. Ratios are simplified by using G.C.F.

• Rate: A comparison of two numbers with different Units

• Unit rate: A rate that has a denominator of 1. Calculate a unit rate by dividing the numerator by the denominator.

Multiple Choice

Mr. Richards 27 pencils and 6 pens. Write a simplified ratio of his pencils to pens.

• 27:6

• 9:2

• 2:9

• 6:27

Multiple Choice

Over Break, Mr. Richards played 18 holes of golf in 5 hours. Write this as a unit rate

• 3.6 holes/ 1 hour

• 18 holes / 5 hours

• 2.7 holes / 1 hour

5.2 Proportions

Multiple Choice

Which of the given ratios forms a proportion?

• $\frac{1}{3}=\frac{3}{9}$

• $\frac{2}{3}=\frac{4}{5}$

Multiple Choice

Solve the proportion  $\frac{9}{4}=\frac{x}{12}$  

• x=5.3

• x=12

• x=27

5.3 Similar Figures

• Similar Figures: Same shape, different sizes

• Calculating missing part: Create a proportion and use the cross product.

Multiple Choice

The pair of figures is similar. Find the missing side.

• x = 20
• x = 12
• x = 5
• x = 4

Multiple Choice

• 2
• 7
• 0.5
• 12