Worksheet: Identifying Odd and Even Numbers by Pairing

In this worksheet, we will practice identifying whether a number, up to 20, is even or odd by grouping objects in pairs to see if one is left over.

Q1:

Here is a group of 9 people.

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

A no
B yes

Q2:

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?

Q3:

Here are 57 dots. Is 57 even or odd?

A odd
B even

Q4:

Is 16 even or odd?

A even
B odd

Q5:

Is the number of stars even or odd?

A even
B odd

Q6:

Here is a group of 8 people.

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

Ayes
Bno

Q7:

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

Aodd
Beven

Q8:

Isabella is using ten frames to see if 14 is even or odd.

She knows that even numbers can be grouped into pairs, so she colors 14 squares in two ten frames and tries to see if every square has a partner.

She notices that the first ten frame is full and can always be grouped into pairs. So, to decide if the number is odd or even, she needs to look at the second ten frame, which is the ten frame for the unit digit.

Now it is your turn. Is 17 even or odd? Why?

Q9:

Here are 46 dots. Is 46 even or odd?

A even
B odd

Q10:

Every child has a partner to work with.