Even Numbers
Definition
Worked examples
Common mistakes
- \(0\) is not even → \(0\) is even because \(0 \div 2 = 0\) Zero is divisible by 2 with no remainder, so it is even.
- Negative numbers like \(-4\) cannot be even → \(-4\) is even because \(-4 \div 2 = -2\) Even and odd apply to all integers, positive and negative.
- \(2.5\) is even because it has a 2 → Only integers can be even; \(2.5\) is not an integer Even numbers must be whole numbers (integers); decimals and fractions are neither even nor odd.
Where you'll use it next
Found in 5 StudyPug lessons
Draft Lisa Grade 3 Math placeholder
Learn to identify even and odd numbers using the last digit, pairing objects, and number line patterns, then practice with simple examples.
Grade 1 Math placeholder
Use a number line and skip counting by twos to quickly tell whether a number is even or odd.
Grade 1 Math placeholder
Learn to decide whether a group of objects is even or odd by pairing them up and checking for a leftover, with pictures and practice.
Grade 1 Math placeholder
See how splitting a group of objects into pairs of two shows right away whether the total is even or odd.
Grade 1 Math placeholder
Discover a fast way to identify a number as even or odd by looking at its last digit or by pairing up objects.
See also
Reviewed by Pat Cheng, M.Ed. — StudyPug Curriculum Lead · Last updated June 6, 2026