Lesson Worksheet: Identifying Odd and Even Numbers: Pairing or Grouping Mathematics • 2nd Grade

In this worksheet, we will practice deciding if a number up to 20 is even or odd by investigating whether you can divide it into two equal groups without any remainders.

Q1:

Here is a group of 9 people.

Can we group the people in pairs so that everyone has a partner?

  • AYes
  • BNo

Q2:

Is the number of stars even or odd?

  • Aeven
  • Bodd

Q3:

Here is a group of 8 people.

Can we split the group into pairs so that everyone has a partner?

  • AYes
  • BNo

Q4:

A number is odd if we cannot split it into groups of two with nothing left over.

If we try to split these 9 squares into groups of 2, there is always one left over. So, 9 is odd.

Which of the following numbers is odd?

  • A
  • B
  • C
  • D

Q5:

Every child has a partner to work with.

Is the total number of children even or odd?

  • Aodd
  • Beven

Q6:

Is the number of cats even or odd?

  • AEven
  • BOdd

Q7:

David is using a ten frame to see if numbers are even or odd. He colors 6 squares in the ten frame and tries to pair each square in the top row with the square under it.

He sees that he can divide 6 into three pairs, so 6 is an even number. Then, he colors 9 squares in the same way.

He sees that he cannot divide 9 into pairs. There is one left over, so 9 is an odd number. Now, it is your turn. Pick the ten frame that shows that 7 is an odd number.

  • A
  • B
  • C
  • D
  • E

Q8:

These children wanted to work in pairs but there was one child left.

Is the total number of children even or odd?

  • Aodd
  • Beven

Q9:

Is the number of circles in the figure even or odd?

  • Aeven
  • Bodd

Q10:

A number is even if it can be split into two groups of equal size.

These 6 squares can be split into two groups of 3 squares. So, 6 is even.

Which of the following numbers is even?

  • A
  • B
  • C
  • D
  • E

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