Odd or Even Theory - Sample Math Practice Problems

The math problems below can be generated by MathScore.com, a math practice program for schools and individual families. References to complexity and mode refer to the overall difficulty of the problems as they appear in the main program. In the main program, all problems are automatically graded and the difficulty adapts dynamically based on performance. Answers to these sample questions appear at the bottom of the page. This page does not grade your responses.

See some of our other supported math practice problems.

Complexity=2, Mode=words

Select if the resulting number is odd or even
 1.   even number + even number --- odd even 2.   odd number × even number --- odd even

Complexity=2, Mode=numbers

Select if the resulting number is odd or even
 1.   7899 + 12239 --- odd even 2.   8310 + 15807 --- odd even

Complexity=3, Mode=numbers

Select if the resulting number is odd or even
 1.   45613 × 23015 - 29376 --- odd even 2.   47504 - 13169 + 40187 --- odd even

Complexity=4, Mode=numbers

Select if the resulting number is odd or even
 1.   22139 + 43805 - 25891 - 31900 --- odd even 2.   2926 + 19349 + 46938 - 37557 --- odd even

Complexity=2, Mode=words

Select if the resulting number is odd or even
1even number + even number
2odd number × even number

Complexity=2, Mode=numbers

Select if the resulting number is odd or even
17899 + 12239
Solution
7899 + 12239 = odd + odd
odd + odd = even
28310 + 15807
Solution
8310 + 15807 = even + odd
even + odd = odd

Complexity=3, Mode=numbers

Select if the resulting number is odd or even
145613 × 23015 - 29376
Solution
45613 × 23015 - 29376 = odd × odd - even
odd × odd = odd
odd - even = odd
247504 - 13169 + 40187
Solution
47504 - 13169 + 40187 = even - odd + odd
even - odd = odd
odd + odd = even

Complexity=4, Mode=numbers

Select if the resulting number is odd or even
122139 + 43805 - 25891 - 31900
Solution
22139 + 43805 - 25891 - 31900 = odd + odd - odd - even
odd + odd = even
even - odd = odd
odd - even = odd