Ratios
Science
Riddles
Comparing Ratios
Challenge
100
In a drawing, there are three circles, four stars, and three triangles. What is the ratio of stars to the total number of shapes.
What is 2/5 or 4/10
100

What does starch and protein break down into?

glucose and amino acids

100

What kind of room has no doors and windows?

mushroom

100
Of the 15 children at the park, 12 children are riding bikes and 3 children are riding scooters. What s the ratio of bikes to children? WRITE 3 WAYS!
12 to 15 12/15 12:15
100

Andrew types 36 words in 4 minutes. How many words does he type per minute?

9
200
Lil blew up 7 balloons. Kathy blew up 5 balloons. What is the ratio of total balloons to Kathy's balloons?
12 to 5
200

What system breaks down food?

digestive system

200

if you don't keep me I break?

a promise

200
A car can travel 600 miles on 20 gallons of gas. What is the unit rate of miles per gallon for this car?
30 to 1
200

A petkeeper has birds and dogs at his pet shop.  The ratio of birds to dogs is 5:7. Draw a model to show your work.

Select all the statements about the animals that are correct.

  1. There are 5 birds for every 7 dogs.

  2. The ratio of total animals to birds is 12:7.

  3. There must be 2 more dogs than birds.

  4. The ratio of dogs to birds is 7 to 5.



a, c, d

300
The recipe calls for 2 eggs, 8 cups of flour, 3 teaspoons of oil, and a pinch of salt. What is the ratio of cups of flour to eggs?
8:2 OR 4:1
300

What are the inputs for cellular respiration?

glucose and oxygen 

300

what has 13 hearts and no other organs 

a deck of cards

300
The ratio of cups of peas to cups of carrots is 3 to 2. Write 3 equivalent ratios.
6 to 4, 12 to 8, 15 to 10
300
Sally is taking a typing class to improve her typing skills. She can type 260 words in 4 minutes. How many words can she type per minute 

65

400
There are 10 rabbits in a cage. The ratio of white rabbits to grey rabbits is 3:7. How many white rabbits are in the cage?
3 white rabbits
400

What are the outputs of cellular respiration?

water, carbon dioxide, energy

400
I sleep during the day and fly by night, but I have no feathers to aid my flight?What am I?

bat

400
Ahmad's mom prepares a plate with 5 peaches and 4 apples for 6 students in his study group. What is the ratio of fruit to students written as a fraction?
9/6 OR 3/2
400

Stephanie ran 64 miles in 4 weeks. How many miles does she run in 7 weeks? Draw a table or model to show your work.


112

500
There are 5 mice in a cage. The ratio of pink mice to black mice is 2:3. How many black mice are in the cage?
3 mice
500

What are the molecules you need for growth and repair?

glucose, oxygen, and amino acids (protein)

500

I am so simple that I can only point, yet I guide people all over the world? What am I?

compass

500
A recipe uses 2 cups of chopped onions, 6 cups of chopped tomatoes, 1 tablespoon of olive oil, and 3 potatoes. How many cups of tomato are need to triple the recipe? Explain.
18, because 6 X 3 = 18.
500

Kristen is driving to school from home. Kristen drives 420 mile in 5 hours. How many miles can she drive in 7 hours at this rate? 

588

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