Subtracting: Is the Answer Odd or Even?

In this worksheet, students decide whether the difference between two numbers is odd or even, without calculating the actual sum. Then they check by doing the calculation.

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 subtraction is odd or even.

Example

Is the answer to this subtraction odd or even?

37 - 15

Answer

37 - 15

We just look at the units digits and subtract 7 - 5 = 2, which is even.

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 even.

Alternatively, you could simply work out 37 - 15 = 22, which is even.

Is the result of this subtraction odd or even?

19 - 10

Even

Odd

Is the result of this subtraction odd or even?

54 - 43

Even

Odd

Is the result of this subtraction odd or even?

79 - 3

Odd

Even

Is the result of this subtraction odd or even?

28 - 5

Even

Odd

Is the result of this subtraction odd or even?

77 - 10

Even

Odd

Is the result of this subtraction odd or even?

55 - 9

Even

Odd

Is the result of this subtraction odd or even?

35 - 13

Even

Odd

Is the result of this subtraction odd or even?

28 - 12

Even

Odd

Is the result of this subtraction odd or even?

88 - 28

Even

Odd

Is the result of this subtraction odd or even?

57 - 36

Even

Odd

• Question 1

Is the result of this subtraction odd or even?

19 - 10

CORRECT ANSWER
Odd
• Question 2

Is the result of this subtraction odd or even?

54 - 43

CORRECT ANSWER
Odd
• Question 3

Is the result of this subtraction odd or even?

79 - 3

CORRECT ANSWER
Even
• Question 4

Is the result of this subtraction odd or even?

28 - 5

CORRECT ANSWER
Odd
• Question 5

Is the result of this subtraction odd or even?

77 - 10

CORRECT ANSWER
Odd
• Question 6

Is the result of this subtraction odd or even?

55 - 9

CORRECT ANSWER
Even
• Question 7

Is the result of this subtraction odd or even?

35 - 13

CORRECT ANSWER
Even
• Question 8

Is the result of this subtraction odd or even?

28 - 12

CORRECT ANSWER
Even
• Question 9

Is the result of this subtraction odd or even?

88 - 28

CORRECT ANSWER
Even
• Question 10

Is the result of this subtraction odd or even?

57 - 36

CORRECT ANSWER
Odd
---- OR ----

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