Illustrative Math Grade 6 Unit 2 Mid Lesson 1 - 7 Review

Front

A school requires 2 teachers for every 20 students. How many teachers are needed for 80 students?

Back

8 teachers

Front

What is the ratio of cats to dogs if there are 4 cats and 16 dogs?

Back

1 to 4

Front

What is the ratio of apples to bananas if there are 3 apples for every 4 bananas?

Back

The ratio of apples to bananas is 3 to 4.

Front

What is the ratio of green marbles to blue marbles if there are 8 green marbles and 20 blue marbles?

Back

2 to 5

Front

In a fish tank, the ratio of red fish to blue fish is 3:5. If there are 20 blue fish, how many red fish are there?

Back

12 red fish.

Front

Define ratio in mathematics.

Back

A ratio is a comparison of two quantities by division.

Front

What does it mean if a ratio is expressed as 1:4?

Back

It means for every 1 of the first quantity, there are 4 of the second quantity.

Front

How do you simplify the ratio 8:12?

Back

Divide both numbers by their greatest common divisor, which is 4. The simplified ratio is 2:3.

Front

What is a tape diagram and how is it used in solving ratio problems?

Back

A tape diagram is a visual representation of ratios that helps to compare quantities.

Front

If the ratio of boys to girls in a class is 2:3 and there are 10 boys, how many girls are there?

Back

15 girls.