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2nd grade · Math · Unit 10 of 18

Even, Odd and Ordinals

Pair things up, and say who is first, second or third.

What your child practices

Deciding whether a number up to 100 is even or odd by making pairs, and using ordinal numbers for position.

New York State Learning Standards learning standard: NY-2.OA.3a · deciding whether a group of objects has an odd or even number of members

How we explain it

Children can open this short lesson before they practice.

  1. Even numbers can make pairs with none left over.
  2. Odd numbers leave one left over.
  3. Even numbers end in 0, 2, 4, 6 or 8.

Example: Is 25 even or odd? It ends in 5. Odd numbers end in 1, 3, 5, 7 or 9. Answer: Odd

Even, Odd and Ordinals in New York

In the New York State Learning Standards, this is unit 10 of 18 in 2nd grade Math, after Skip Counting and before Dollars & Cents.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: New York State Education Department (NYSED)

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Which one means “in position number 2”?

    • 1st
    • 2nd
    • 3rd

  2. Question 2

    The first four odd numbers are 1, 3, 5 and…

    • 6
    • 7
    • 8

  3. Question 3

    Is 13 even or odd?

    • odd
    • neither
    • even

  4. Question 4

    Is 10 even or odd?

    • odd
    • neither
    • even

  5. Question 5

    Is 6 even or odd?

    • even
    • odd
    • neither

  6. Question 6

    Is 3 + 4 even or odd?

    • even
    • odd
    • neither

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