# Addition: Is the Answer Odd or Even?

In this worksheet, students decide whether the sum of three numbers is odd or even, without doing the calculation. Then they check their answer.

Key stage:  KS 2

Curriculum topic:  Number: Addition and Subtraction

Curriculum subtopic:  Estimate Calculations and Check Answers

Difficulty level:

### QUESTION 1 of 10

In this worksheet, you must decide whether the answer to an addition sum is odd or even.

Example

Is the answer to this sum odd or even?

34 + 15 + 44

Answer

34 + 15 + 44

We just look at the units digits and add 4 + 5 + 4 = 13, which is odd.

Remember that odd numbers end in 1, 3, 5, 7 and 9.

Even numbers end in 0, 2, 4, 6 and 8.

So the answer is odd

Is the answer to this sum odd or even?

20 + 22 + 42

Odd

Even

Is the answer to this sum odd or even?

26 + 15 + 12

Odd

Even

Is the answer to this sum odd or even?

17 + 30 + 1

Odd

Even

Is the answer to this sum odd or even?

39 + 28 + 5

Odd

Even

Is the answer to this sum odd or even?

2 + 35 + 44

Odd

Even

Is the answer to this sum odd or even?

31 + 37 + 35

Odd

Even

Is the answer to this sum odd or even?

41 + 45 + 7

Odd

Even

Is the answer to this sum odd or even?

42 + 47 + 40

Odd

Even

Is the answer to this sum odd or even?

43 + 36 + 46

Odd

Even

Is the answer to this sum odd or even?

46 + 11 + 47

Odd

Even

• Question 1

Is the answer to this sum odd or even?

20 + 22 + 42

CORRECT ANSWER
Even
EDDIE SAYS
Remember there is no need to work out the sum. Just add the units.
• Question 2

Is the answer to this sum odd or even?

26 + 15 + 12

CORRECT ANSWER
Odd
• Question 3

Is the answer to this sum odd or even?

17 + 30 + 1

CORRECT ANSWER
Even
• Question 4

Is the answer to this sum odd or even?

39 + 28 + 5

CORRECT ANSWER
Even
• Question 5

Is the answer to this sum odd or even?

2 + 35 + 44

CORRECT ANSWER
Odd
• Question 6

Is the answer to this sum odd or even?

31 + 37 + 35

CORRECT ANSWER
Odd
• Question 7

Is the answer to this sum odd or even?

41 + 45 + 7

CORRECT ANSWER
Odd
• Question 8

Is the answer to this sum odd or even?

42 + 47 + 40

CORRECT ANSWER
Odd
• Question 9

Is the answer to this sum odd or even?

43 + 36 + 46

CORRECT ANSWER
Odd
• Question 10

Is the answer to this sum odd or even?

46 + 11 + 47

CORRECT ANSWER
Even
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