Ratios
Name: ______________________________
Date: ____________________ Per: _____
1. The square tiles on Efrain’s kitchen floor as laid in this pattern:
a) What is the ratio of white tiles to purple tiles in this pattern?
b) If the entire kitchen floor contained 30 purple tiles, how many white tiles would it have?
c) What is the ratio of white tiles to ALL tiles in this pattern? (All tiles = white tiles + purple tiles)
d) If the entire kitchen floor contained 63 tiles in all, how many white tiles would it have?
2. Mercedes made this bead necklace at summer camp. She used three different beads: spherical beads, cubeshaped beads, and diamond-shaped beads.
a) What is the ratio of spherical beads to cube-shaped beads on the necklace?
b) Mercedes wants to make a longer necklace with the beads in the same pattern. She plans to use
24 spherical beads. How many cube-shaped beads will she need?
c) What is the ratio of cube-shaped beads to ALL of the beads in the necklace?
d) Mercedes wants to make a bracelet in the same pattern. She uses 10 beads in all. How many cubeshaped beads will she need?
3. Consider the configuration of black keys and white keys on a keyboard:
a) What is the ratio of white keys to black keys on the keyboard?
b) This pattern of keys is represented on larger keyboards. How many black keys would you expect
to find on a keyboard with 42 white keys?
c) What is the ratio of black keys to ALL keys on the keyboard above?
d) How many black keys would you expect to find on a keyboard with 72 keys in all?
4. The ratio between the top number and bottom number on each card is the same.
a) Find the missing numbers. Explain how you found your answers.
b) What ratio expresses the relationship between the top number and the bottom number on each
card?
c) Draw three more cards that belong to this set.
5. The ratio between the top number and the bottom number on each card is the same.
a) Fill in the missing numbers.
b) Draw three more cards that belong in this set.
6. Work with a partner to write at least five ratio statements about this quilt with red, white, and pink squares.
Red square
Pink square
White square
square
7. Write the following as ratios in simplest form. Don’t forget to include the units!
a) 9 out of 15 pets
b) 20 wins out of 36 games
c) 4 plays to 52 cards
d) 45 out of 60 days
e) 16 out of 10 pencils
f) 96 people to 3 buses
8. Challenge problem (this is optional!): The ratio of Meiko’s age to his brother’s age is 2:3. In ten years, the
ratio will be 4:5. How old is Meiko now?