Even and Odd Numbers — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Which of these numbers is even?
A) 33
B) 47
C) 56
D) 81
56 ends in 6, which is an even digit. The other numbers (43, 71, 89) all end in odd digits.
2. The ones digit of every odd number is which set of digits?
A) 0, 2, 4, 6, 8
B) 1, 2, 3, 4, 5
C) 1, 3, 5, 7, 9
D) 2, 4, 6, 8, 10
Odd numbers always end in one of these five digits: 1, 3, 5, 7, or 9.
3. Which statement about the number 68 is true?
A) 68 is odd because 6 is even
B) 68 is even because it ends in 8
C) 68 is odd because 6 + 8 = 14
D) 68 is even because it is greater than 50
A number is even when its ones digit is 0, 2, 4, 6, or 8. Since 68 ends in 8, it is even.
4. How many even numbers are between 11 and 20?
A) 3
B) 4
C) 5
D) 6
10 is even, so it splits into two equal groups of 5 with nothing left over. Each basket gets 5 apples.
Part B: Fill in the Blank
Write the correct answer on each line.
1. The number 95 is odd because it ends in 5.
When you add an even number and an odd number, the result is always odd. For example, 4 + 3 = 7.
2. The smallest two-digit even number is 10.
The smallest two-digit number is 10, and it ends in 0, which makes it even.
3. The largest two-digit odd number is 99.
The largest two-digit number is 99, and it ends in 9, which makes it odd.
4. The number 46 is even because it ends in 6.
When you add two even numbers together, the result is always even. For example, 6 + 4 = 10.
5. There are 5 even numbers from 1 to 10.
There are exactly five odd digits: 1, 3, 5, 7, and 9.