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Overview
Grade 1 Math
B1. Number Sense
1. B1.1 Whole Numbers
1.5 Identifying a number as even or odd
How to Tell If a Number Is Even or Odd
Discover a fast way to identify a number as even or odd by looking at its last digit or by pairing up objects.
What You'll Learn
Identify even numbers by checking whether the last digit is 0, 2, 4, 6, or 8
Identify odd numbers by checking whether the last digit is 1, 3, 5, 7, or 9
Apply the rule \( n = 2k \) to recognize any even number, where \(k\) is a whole number
Apply the rule \( n = 2k+1 \) to recognize any odd number, where \(k\) is a whole number
Pair objects into groups of two to check evenness without relying on digits alone
Compare even and odd numbers using a number line or hundred grid to spot repeating patterns
What You'll Practice
1
Classifying single-digit and two-digit numbers as even or odd
2
Identifying patterns in even and odd numbers up to 20
Why This Matters
Recognizing even and odd numbers builds your foundation for multiplication, division, and number patterns. This skill helps you understand divisibility rules, simplify fractions, and solve real-world problems involving pairs, groups, and sharing equally.
This Unit Includes
Practice exercises
Learning resources
Skills
Even Numbers
Odd Numbers
Number Sense
Divisibility
Number Properties
ON Curriculum Aligned