Algebra Puzzle – Critical Thinking 13
Can you solve this critical thinking challenge? This is a fun math puzzle for practicing children's math skills. It's also very useful for adults to challenge their brains!
Challenge:
3*4 = 12
2*5 = 30
4*7 = 84
5*8 = ??
The Absolute Best Book to Challenge Your Smart Student!
The correct answer is 120.
Similar to critical thinking number 4, don’t try to find a relationship between numbers on both sides. Instead, consider the digits of each number and try to find a relationship between the two digits of the number in the left side. Try to find an operation between the digits of the number in the left side that can create the digits of the number of the ride side.
3 * 4 = 12
2 * 5 = 30
4 * 7 = 84
5 * 8 = ??
For the first equation, the product or 3 and 4 is 12, which is the answer.
For the second equation, the product of 2 and 5 is 10. But, the answer is 30. So, the symbol * is not a multiplication. 10 times 3 is 30.
Let’s find the pattern. We know that 3 * 4 = 12 and
2 * 5 = 30.
12 times what number is 12? It’s 1. So, 3 × 4 × 1 = 12 and 2 × 5 × 3 = 30
In the first equation, we should find number 1 from 3 and 4. In the second equation, we need to find 3 from 2 and 5. In fact, the difference of 3 and 4 is 1 and the difference of 2 and 5 is 3!
For the third equation, the product of 4 and 7 is 28. The difference of 4 and 7 is 3. Then:
4 × 7 × 3 = 84
Since the difference of 5 and 8 is 3, therefore, the answer to the last equation is:
5 * 8 = 5 × 8 × 3 = 120The 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
- How to Find the Greatest Common Factor (GCF)? (+FREE Worksheet!)
- Other Topics Puzzle – Math Challenge 101
- How to Find Rotation of Axes and General Form of Conic Sections
- How to Compare Money Amounts
- 4th Grade OAA Math Worksheets: FREE & Printable
- Full-Length 6th Grade GMAS Math Practice Test-Answers and Explanations
- What Are the Applications of Inverse Trigonometric Functions?
- How to Analyze Cross Sections of 3D Solids: A Step-by-Step Guide
- How To Create a Distraction-Free Study Environment: 10 Tips
- PSAT Cаlсulаtоr Pоliсу
What people say about "Algebra Puzzle – Critical Thinking 13 - Effortless Math: We Help Students Learn to LOVE Mathematics"?
No one replied yet.