Ratios and proportions (Definitions) Check for understanding

What is the definition of a "ratio"? 

• comparing two liquads
• comparison between two amounts 
• comparing two Corbin OGuin's 
• comparison between a unit 

What is the ratio of green marbles to red marbles?

• 3/2
• 3/1
• 3/3
• 2/3

There are 13 boys and 10 girls in the classroom.  What is the ratio of boys to girls?

• 10 to 13
• 23 to 13
• 13 to 10
• 23 to 10

In the fruit bowl there are 4 apples, 2 bananas, and 5 pears.  What is the ratio of pears to ALL fruit?

• 5:4
• 5:11
• 2:5
• 6:5

Simplify to lowest terms

• 6
• 2/8
• 1/6
•  2/12

For a recipe, Brutus uses 4 cups of sugar for every 5 cups of flour. Which of the following show equivalent ratios for sugar to flour?

• 4/5=8/10 =12/15
• 4/5 = 5/6 = 6/7
• 4/5 = 3/4 = 2/3
• 4/5=8/15=16/45

What number is missing?

• 12
• 3
• 11
• 13

What is a proportion?

• two ratios that are equivalent (equal)

• two ratios combined (added together)

• a comparison between 2 numbers

• the equation of a line

Determine whether each pair of ratios forms a proportion

• Proportion

• Not a Proportion

If a man can eat 2 pizzas in 5 minutes, and he wants to eat 6 pizzas, how many minutes he will take?

• 15 minutes

• 6 minutes

• 3 minutes

• 2 minutes

• 1 minute