Understanding and Simplifying Ratios

What is a ratio?

• A ratio is a comparison of two values.

• A ratio is a type of fruit.

• A ratio is a mathematical operation like addition.

• A ratio is a unit of measurement.

Using the diagram to the left, write each ratio in two different ways. What is the ratio of shaded squares to unshaded squares?

• 10:6, 10/6

• 5:3, 5/3

• 6:10, 6/10

• 3:5, 3/5

Using the diagram to the left, write each ratio in two different ways. 2. unshaded squares to total squares:

• 6:16, 6 to 16

• 3:8, 3 to 8

• 2:5, 2 to 5

• 4:10, 4 to 10

Using the diagram to the left, write each ratio in two different ways. 3. total squares to shaded squares:

• 16 to 10, 16/10

• 10 to 16, 10/16

• 16 to 6, 16/6

• 6 to 16, 6/16

Using the diagram to the left, write each ratio in two different ways. 4. unshaded squares to shaded squares: 6/10, 6:10

• 6/10, 6:10

• 3/5, 3:5

• 2/3, 2:3

• 1/2, 1:2

Find the __greatest__ __common__ __factor__ of the numerator and denominator.

• greatest common factor

• least common multiple

• greatest common multiple

• least common factor

What is the ratio of 20 children to 4 adults in simplest form?

• 5:1

• 4:1

• 6:1

What is the ratio of 14 nurses to 6 doctors in simplest form?

• 7:3

• 6:3

• 5:3

What is the ratio of 16 quarters to 72 pennies in simplest form?

• 2:9

• 3:9

• 4:9

What is the ratio of 18 necklaces to 15 bracelets in simplest form?

• 6:5

• 5:5

• 7:5