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Addition and Subtraction (Difficult)

Take your maths skills to the next level with this 11 Plus quiz. Challenge yourself with tricky addition and subtraction problems every bit as tough as real exam tasks.

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Fascinating Fact:

The Statue of Liberty (93 m) and Big Ben (96 m) together make 189 metres — nearly half the height of the Burj Khalifa.

In 11 Plus Maths, pupils take on more demanding sums that require clear thinking and precision. Mastery of addition and subtraction gives a strong base for harder topics like algebra and ratios.

Key Terms

Inverse Operation: An operation that reverses another (e.g. subtraction undoes addition).
Regrouping: Reorganising digits when carrying or borrowing in calculations.
Minuend: The number from which another number is subtracted.

Discover recommended courses and materials in our Guide to 11 Plus Courses and Materials for Parents .

Frequently Asked Questions (Click to see answers)

How can I improve speed with subtraction?

Practice small subtractions daily, learn number bonds to 10 or 20, and do timed drills to build fluency.

What is the difference between minuend and subtrahend?

The minuend is the number you start with; the subtrahend is the number you subtract from it.

Do 11 Plus exams test addition and subtraction?

Yes — many 11 Plus exams include both operations within arithmetic, reasoning, or word problem sections.

Try These Related Quizzes

1 .

2.3 + 5.6 + 12.3 = ?

19.1

20.1

20.2

20.3

Add the whole numbers first, then add the decimal parts. 2.3 + 5.6 + 12. 3 = (10) + (2 + 5 + 2) + (0.3 + 0.6 + 0.3) = 10 + 9 + 1.2 = 20.2

2 .

120.3 + 23.4 + 8.6 = ?

152.4

150.2

151.3

152.3

Add the whole numbers first, then add the decimal parts. 120.3 + 23.4 + 8.6 = (100) + (20 + 20) + (3 + 8) + (0.3 + 0.4 + 0.6) = 100 + 40 + 11 + 1.3 = 152.3

3 .

345.9 + 38.6 - 17.2 = ?

367.3

376.3

367.4

365.3

345.9 + 38.6 - 17.2 = (300) + (40 + 30 - 10) + (5 + 8 - 7) + (0.9 + 0.6 - 0.2) = 300 + 60 + 6 + 1.3 = 367.3

4 .

69.9 - 40.6 + 123.4 = ?

152.8

152.6

152.7

152.5

69.9 - 40.6 + 123.4 = (100) + (60 + 20 - 40) + (9 + 3) + (0.9 + 0.4 - 0.6) = 100 + 40 + 12 + 0.7 = 152.7

5 .

200 + 158.3 + 28.9 = ?

378.2

387.2

387.1

387.0

200 + 158.3 + 28.9 = (200 + 100) + (50 + 20) + (8 + 8) + (0.3 + 0.9) = 300 + 70 + 16 + 1.2 = 387.2

6 .

128.7 + 450.3 - 15.2 + 200 = ?

763.9

763.7

763.8

763.6

128.7 + 450.3 - 15.2 + 200 = (100 + 400 + 200) + (20 + 50 - 10) + (8 - 5) + (0.7 + 0.3 - 0.2) = 700 + 60 + 3 + 0.8 = 763.8

7 .

0.8 + 0.2 + 0.7 = ?

1.5

1.2

0.7

1.7

0.8 + 0.2 + 0.7 = (0.8 + 0.2) + 0.7 = 1 + 0.7 = 1.7. Be on the LOOKOUT for decimals that sum to 1

8 .

678.1 - 345.2 = ?

332.8

332.7

323.9

332.9

678.1 - 345.2 = (600 - 300) + (70 - 40) + (8 - 5) + (0.1 - 0.2) = 300 + 30 + 3 - 0.1 = 333 - 0.1 = 332.9: Note: with negative numbers, the negative sign is kept with each part of the number, e.g. - 678.6 is written as -600, -70, -8, and -0.6

9 .

8.8 - 6.4 - 8.8 + 19.6 = ?

13.2

31.2

13.1

13.0

8.8 - 6.4 - 8.8 + 19.6 = (10) + (9 - 6) + (0.6 - 0.4) = 10 + 3 + 0.2 = 13.2: don't waste time writing numbers that cancel each other out, e.g. 8.8 - 8.8 = 0

10 .

23.5 - 14.9 + 146.2 = ?

145.8

154.8

154.7

154.6

23.5 - 14.9 + 146.2 = (100) + (20 + 40 - 10) + (3 + 6 - 4) + (0.5 + 0.2 - 0.9) = 100 + 50 + 5 - 0.2 = 154.8

Author: Frank Evans (Specialist 11 Plus Teacher and Tutor)

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