Worked Example 1
Is 14 Even or Odd?
Is 14 even or odd? Show why.
- 1Try to make two equal groups: 7 and 7.
- 27 + 7 = 14, with none left over.
Answer: Even: 14 = 7 + 7
Florida Grade 2 Math · Algebraic Reasoning
MA.2.AR.3.1: Even and Odd Numbers
What this Grade 2 benchmark means, worked examples, common mistakes, and a free printable worksheet.
Created by a Florida mom · Published by Tropical Learning LLC
What Is Benchmark MA.2.AR.3.1?
An even number can be split into two equal groups, or written as two equal addends (8 = 4 + 4). An odd number makes two equal groups with one left over (9 = 4 + 4 + 1).
Students connect this to skip counting by 2s, arrays with two rows, and the ones digit: even numbers end in 0, 2, 4, 6, or 8. In this benchmark, the equal addends are 12 or less.
Official benchmarkRepresent an even number using two equal groups or two equal addends. Represent an odd number using two equal groups with one left over or two equal addends plus 1.
How it is tested: Grade 2 students take FAST Star Math, Florida's math test for Kindergarten through Grade 2.
Worked Examples
Worked Example 2
Show That 11 Is Odd
Show that 11 is odd.
- 1Two equal groups of 5 make 10.
- 25 + 5 + 1 = 11, so there is one left over.
Answer: Odd: 11 = 5 + 5 + 1
Common Mistakes to Watch For
Looking at the tens digit
Wrong:23 is even because 2 is even.
Look at the ones digit: 3 is odd, so 23 is odd. 11 + 11 + 1 = 23.
Forgetting the one left over
Wrong:9 = 4 + 4
4 + 4 is 8. Nine is 4 + 4 + 1, so there is one left over and 9 is odd.
Helpful Math Tip
Line up small objects in pairs. If every object has a partner, the number is even. If one is left without a partner, it is odd.
Related Grade 2 Skills
Make Florida Math Practice More Fun
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Start Practicing FreeIndependent Educational Platform. FastChomp is published by Tropical Learning LLC and is not affiliated with, sponsored by, or endorsed by the Florida Department of Education. FAST and Star assessment names are referenced for informational purposes only. FastChomp practice questions are original educational materials, not official Florida FAST assessment questions.