Number Properties Puzzle – Challenge 17
A FREE math puzzle for all ages! Sharing this fun math challenge with your kids is a good way to get them thinking mathematically.
Challenge:
How many numbers between 400 and 600 begin with digit 5 or end with digit 5?
A- 20
B- 100
C- 110
D- 120
E- 140
The Absolute Best Book to Challenge Your Smart Student!
Original price was: $16.99.$11.99Current price is: $11.99.
Satisfied 123 Students
The correct answer is C.
Numbers between 500 and 599 begin with 5. So, there are 100 numbers that begin with 5.
Consider numbers that end with 5:
405, 415, 425, 435, …, 495
Also, numbers 505, 515, 525, …, 595, end with 5. But, we counted them before!
There are 20 numbers that end with 5. We counted 10 of them before. Therefore, there are 100 + 10 = 110 numbers that begin with digit 5 or end with digit 5.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
- How to Compare Numbers Up to a Billion: A Step-by-Step Guide
- 8th Grade NSCAS Math Worksheets: FREE & Printable
- Top 10 SAT Math Prep Books (Our 2023 Favorite Picks)
- 8th Grade FSA Math Worksheets: FREE & Printable
- How to Use Elimination to Solve a System of Equations: Word Problems
- How to Solve Natural Logarithms? (+FREE Worksheet!)
- 7th Grade ISASP Math Worksheets: FREE & Printable
- How to Multiply Mixed Numbers? (+FREE Worksheet!)
- How to Write a Quadratic Function from Its Vertex and Another Point
- How to Solve One-Step Inequalities? (+FREE Worksheet!)
What people say about "Number Properties Puzzle – Challenge 17 - Effortless Math: We Help Students Learn to LOVE Mathematics"?
No one replied yet.