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.

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.
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
Original price was: $29.99.$19.99Current price is: $19.99.Original price was: $29.99.$14.99Current price is: $14.99.Original price was: $29.99.$14.99Current price is: $14.99.Satisfied 1 StudentsOriginal price was: $24.99.$14.99Current price is: $14.99.Satisfied 92 StudentsOriginal price was: $24.99.$15.99Current price is: $15.99.Satisfied 125 Students
Related to This Article
More math articles
- 8th Grade Mathematics Worksheets: FREE & Printable
- How to Use Input/output Tables to Add and Subtract Integers?
- 4th Grade Scantron Math Worksheets: FREE & Printable
- Number Properties Puzzle – Challenge 6
- How to Remove Discontinuities?
- Intelligent Math Puzzle – Challenge 86
- Using Number Lines to Add Two Integers with Different Signs
- Standard Form of a Circle
- Overview of the GED Mathematical Reasoning Test
- How to Detecting Limits from Graphs
What people say about "Ratio, Proportion and Percentages Puzzle -Critical Thinking 9 - Effortless Math: We Help Students Learn to LOVE Mathematics"?
No one replied yet.