Math
Odd or Even?
How can we tell if a number is odd or even?
The short answer
Even numbers can be divided into two equal whole-number groups. Examples: 2, 4, 6, 8.
Let’s explore
- Even numbers can be divided into two equal whole-number groups. Examples: 2, 4, 6, 8.
- Odd numbers leave one left over when divided into two equal whole-number groups. Examples: 1, 3, 5, 7.
- Quick trick: Numbers ending in 0, 2, 4, 6 or 8 are even. Numbers ending in 1, 3, 5, 7 or 9 are odd.
Quick Quiz
- What is the short answer to “Odd or Even?”?
- Can you explain one key fact in your own words?
- What new question would you like to explore next?
Related Topics
Math
How Can 7 Mean 7, 70 and 700?
The digit looks the same. Why does its value change?
7 = 7 ones. 70 = 7 tens. 700 = 7 hundreds.
Math
Which Is Greater - 368 or 386?
How can we compare two three-digit numbers quickly?
Start by comparing the largest place value. 368 and 386 both have 3 hundreds.
Math
Why Do We Skip Count?
2, 4, 6, 8, 10... What are we really doing?
Skip counting helps us count equal groups faster.