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.
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
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