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Addition and Subtraction (Easy)
13 + 14 + 36 = 63.

Addition and Subtraction (Easy)

Practise easy addition and subtraction with this 11 Plus Maths quiz. Build confidence, speed, and accuracy as you work through simple number challenges and quick sums.

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Fascinating Fact:

Adding time is fun until you realise “five more minutes” of screen time always turns into thirty.

In 11 Plus Maths, pupils practise mental addition and subtraction to solve everyday problems. Learning these basics helps with trickier topics like percentages, ratios, and algebra later on.

  • Addend: A number that is added to another in an addition problem.
  • Difference: The result when one number is subtracted from another.
  • Inverse Operation: The opposite process, such as subtraction being the inverse of addition.
What do addition and subtraction mean?

Addition means putting numbers together to make a total. Subtraction means taking one number away from another to find what is left.

How can I get faster at mental maths?

Practise regularly with small numbers first, then move to larger ones. Use number bonds and patterns to make quick calculations in your head.

Are addition and subtraction in the 11 Plus exam?

Yes, they often appear as part of number reasoning questions that test speed, logic, and accuracy under exam conditions.

In each of the following questions, what is the answer to the given problem?
1 .
16 + 17 = ?
35
36
33
37
TIP: With numbers less than 100, add the tens first and then add the ones. 16 + 17 = (10 + 10) + (6 + 7) = 20 + 13 = 33
2 .
27 + 46 + 83 = ?
168
158
165
156
TIP: With numbers less than 100, add the tens first and then add the ones. 27 + 46 + 83 = (20 + 40 + 80) + (7 + 6 + 3) = 140 + 16 = 156
3 .
3 - 6 + 17 + 28 = ?
44
42
43
46
TIP: With numbers less than 100, add the tens first and then add the ones. 3 - 6 + 17 + 28 = (10 + 20) + (7 + 8 + 3) - (6) = 30 + 18 - 6 = 48 - 6 = 42
4 .
37 - 19 = ?
19
16
18
17
TIP: With numbers less than 100, add the tens first and then add the ones. 37 - 19 = (30 - 10) + (7 - 9) = 20 - 2 = 18
5 .
6 + 6 + 6 - 6 = ?
18
24
12
6
TIP: With numbers less than 100, add the tens first and then add the ones. (6 + 6 + 6) - 6 = 18 - 6 = 12
6 .
25 - 47 + 89 - 5 = ?
61
62
64
63
TIP: With numbers less than 100, add the tens first and then add the ones. 25 - 47 + 89 - 5 = (20 + 80 - 40) + (5 + 9 - 7 - 5) = 60 + 2 = 62
7 .
13 + 14 + 36 = ?
63
61
62
65
TIP: With numbers less than 100, add the tens first and then add the ones. 13 + 14 + 36 = (10 + 10 + 30) + (3 + 4 + 6) = 50 + 13 = 63. Don't forget: sometimes you will spot an easy addition which will make the calculation easier, e.g. 14 + 36 = 50
8 .
19 - 27 + 56 = ?
49
51
48
53
TIP: With numbers less than 100, add the tens first and then add the ones. 19 - 27 + 56 = (10 + 50 - 20) + (9 + 6 - 7) = 40 + 8 = 48. You could write '19' as '20 - 1' and do the calculation using this. Always BE ON THE LOOKOUT for useful simplifications
9 .
47 - 58 + 19 = ?
8
7
6
9
TIP: With numbers less than 100, add the tens first and then add the ones. 47 - 58 + 19 = (40 + 20 - 50) + (7 - 8 - 1) = 10 - 2 = 8. Here '19' was replaced by '20 - 1' and the calculation was done using this
10 .
0 + 10 + 0 + 28 = ?
48
58
0
38
TIP: With numbers less than 100, add the tens first and then add the ones. 0 + 10 + 0 + 28 = (10 + 20) + (8) = 30 + 8 = 38. Ignore zeros!
Author:  Frank Evans (Specialist 11 Plus Teacher and Tutor)

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