Even and Odd Numbers — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A number is even if it can be divided into two equal groups.
Even numbers divide evenly into two equal groups with nothing left over.
2. The ones digit of every even number is 0, 2, 4, 6, or 8.
The ones digit is the last digit in a number. In 68, the ones digit is 8.
3. The number 53 is odd because it ends in 3.
Since 1 is an odd digit, any number ending in 1 is odd.
4. The number 78 is even because it ends in 8.
Since 6 is an even digit, any number ending in 6 is even.
5. If you have 14 apples, you can make two equal groups of 7.
14 divided by 2 equals 7, so 14 objects split into two equal groups gives 7 in each.
6. The ones digit of every odd number is 1, 3, 5, 7, or 9.
The ones digit is the last digit in a number. In 59, the ones digit is 9.
7. The number 100 is even.
When you add two odd numbers together, the result is always even. For example, 3 + 5 = 8.
8. An odd number plus one always equals an even number.
Since 4 is an even digit, any number ending in 4 is even.
9. The number 41 is odd because it ends in 1.
Since 5 is an odd digit, any number ending in 5 is odd.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
36
→ Even, ends in 6
Odd, ends in 9
59
→ Odd, ends in 9
Even, ends in 6
84
→ Even, ends in 4
Odd, ends in 7
17
→ Odd, ends in 7
Even, ends in 4
Each number is matched with whether it is even or odd based on its ones digit. Numbers ending in 0, 2, 4, 6, or 8 are even. Numbers ending in 1, 3, 5, 7, or 9 are odd.