Even and Odd Numbers — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. If you add an even number and an odd number, the result is always which type?
A) Even
B) Odd
C) Zero
D) It depends on the numbers
13 + 14 = 27. An odd number plus an even number always gives an odd number.
2. What is the next even number after 46?
A) 45
B) 47
C) 48
D) 50
48 ends in 8, which is an even digit. The other numbers (35, 63, 71) all end in odd digits.
3. Sam has 15 marbles. Can he split them into two equal groups with none left over?
A) Yes, because 15 is greater than 10
B) Yes, because 1 + 5 = 6
C) No, because 15 is an odd number
D) No, because 15 is less than 20
15 is odd, so it cannot be split into two equal groups. One child would get 8 and the other would get 7.
4. Which pair of numbers are both odd?
A) 22 and 35
B) 41 and 63
C) 58 and 71
D) 14 and 29
41 ends in 1 and 63 ends in 3, both odd digits. 52 ends in 2 and 78 ends in 8, both even digits.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Adding two odd numbers always gives an even number.
When you add two odd numbers together, the result is always even. For example, 7 + 5 = 12.
2. The next odd number after 72 is 73.
Odd numbers go up by 2. After 71, the next odd number is 73.
3. The number 88 is even because it ends in 8.
Since 0 is an even digit, any number ending in 0 is even.
4. If you subtract an odd number from an even number, the answer is odd.
When you add an odd number and an even number, the result is always odd. For example, 5 + 4 = 9.
5. The even number just before 31 is 30.
Even numbers go up by 2. After 28, the next even number is 30.