Name: ___________________

Date:___________________

kwizNET Subscribers, please login to turn off the Ads!
Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

Grade 5 - Mathematics
9.1 Ratios

  1. A ratio is a way of comparing two quantities by division.
  2. It is same as writing fraction.
  3. It is written as
    2 to 4 2:4 2/4
  4. The ratio of two quantities is expressed in simplest form of that fraction.
  5. When writing a ratio involving measurements, both quantities should have the same unit.
Example: What is the ratio of 21 and 35?
This can be written in fraction as 21/35
  1. To find the simplest form, we find the HCF of the given quantities
  2. Factors of 21 are 1, 3, 7, 21
  3. Factors of 35 are 1, 5, 7, 35
  4. HCF is 7.
  5. Divide both 21 and 35 by 7.
  6. The simplest form of this is 3/5.
Answer: 3:5

Example: Express the ratio: 9 goldfish out of 15 as a fraction in simplest form.
9/15 = 3/5
The ratio of goldfish to fish is 3 to 5. This means that for every 5 fish, 3 of them are goldfish.

Example: Express the ratio 2 feet to 18 inches as a fraction in simplest form.
2 feet/ 18 inches
= 24 inches / 18 inches
= 4/3
Written in simplest form the ratio is 4 to 3.


Directions: Answer the following questions. Also write at least ten examples of your own.
Q 1: What is the ratio of 15 to 45
1/3
1/4
2/3

Q 2: A ____ is a way of comparing size of two numbers.
scale
ratio
percentages

Q 3: What is the ratio of 25 to 10
4/2
1/3
5/2

Q 4: What is the ratio of 35 to 7
5/1
5/2
5/3

Q 5: What is the ratio of 80 to 100
4/3
4/4
4/5

Q 6: What is the ratio of 24 to 36
1/3
2/3
4/3

Q 7: What is the ratio of 16 to 12
4/3
3/4
1/2

Q 8: What is the ratio of 10 to 14
1/7
7/5
5/7

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


Subscription to kwizNET Learning System costs less than $1 per month & offers the following benefits:

  • Unrestricted access to grade appropriate lessons, quizzes, & printable worksheets
  • Instant scoring of online quizzes
  • Progress tracking and award certificates to keep your student motivated
  • Unlimited practice with auto-generated 'WIZ MATH' quizzes
  • Child-friendly website with no advertisements


© 2003-2007 kwizNET Learning System LLC. All rights reserved. This material may not be reproduced, displayed, modified or distributed without the express prior written permission of the copyright holder. For permission, contact info@kwizNET.com
For unlimited printable worksheets & more, go to http://www.kwizNET.com.