Ratio, Proportion and Percentages Puzzle -Critical Thinking 9
Math puzzles are a great way to engage students in developing critical thinking skills. This math puzzle is an educational activity for practicing children’s math skills. For additional educational resources
Challenge:
The average of five numbers is 11 and the average of eight numbers is 7.75. What is the average of these 13 numbers?
The Absolute Best Book to Challenge Your Smart Student!
The correct answer is 9.
Pre-Algebra for Beginners 2026 The Ultimate Step by Step Guide to Preparing for the Pre-Algebra Test
Original price was: $27.99.$17.99Current price is: $17.99.Satisfied 92 Students
The average of five numbers is 11. Therefore, their sum is:
5 × 11 = 55
The average of eight numbers is 7.75. Therefore, their sum is:
8 × 7.75 = 62
The sum of all 13 numbers is 55 + 62 = 117
Therefore, the average of these 13 numbers is:
117 ÷ 13 = 9
The Absolute Best Books to Ace Algebra
Related to This Article
More math articles
- The Ultimate 6th Grade ISASP Math Course (+FREE Worksheets)
- Maryland Algebra 1 Free Worksheets: 65 Free Printable Algebra 1 Worksheets with Worked Answers
- 4th Grade Ohio’s State Tests Math Worksheets: FREE & Printable
- The Ultimate GRE Math Course: The Only Course You Need for Success
- How to Calculate Probability: A Beginner’s Guide
- Ecosystems, Habitats, and Niches
- 3rd Grade Math Skills Every Student Should Master
- Indiana Algebra 1 Free Worksheets: Free Skill-Targeted Algebra 1 Worksheets with Answer Keys
- Free New Jersey Grade 2 Math Worksheets
- 5 Best Digital Pen Tablets for Online Math Teaching in 2026
What people say about "Percentages Puzzle: Critical Thinking 9"?
No one replied yet.