KS1 (Age 5-7)KS2 (Age 7-11)11 Plus (Age 7-11)KS3 (Age 11-14)GCSE (Age 14-17)PSHE A.I.ESL Spanish Specialist Games

Need help with Addition and Subtraction 3 (Medium)? Ask our AI Tutor!

AI Tutor - Lucy

Connecting with Tutor...

Please wait while we establish connection

Hi! I'm Lucy, your AI tutor. How can I help you with Addition and Subtraction 3 (Medium) today?

now

Numbers everywhere! In this quiz we look at 3-figure ones.

Addition and Subtraction 3 (Medium)

Sharpen your addition and subtraction skills with this 11 Plus Maths quiz. Solve exciting challenges that mix numbers, patterns, and logic for real exam-style practice.

Explore the Topic →

(quiz starts below)

Fascinating Fact:

If you add the height of the Great Pyramid of Giza at 139 metres and the Statue of Liberty at 93 metres, the total is 232 metres, about two London Eyes stacked together.

In 11 Plus Maths, pupils practise solving calculations quickly and accurately. Understanding how numbers relate helps build confidence for harder subjects such as fractions and algebra.

Key Terms

Estimate: A quick, sensible guess of an answer to check if your calculation is correct.
Rounding: Reducing a number to the nearest ten, hundred, or thousand for easier calculation.
Sum: The total you get after adding numbers together.

Explore real-style questions in our 11 Plus Sample Questions Guide for Parents .

Frequently Asked Questions (Click to see answers)

Why is estimation useful in maths?

Estimation helps you check if an answer is reasonable. It saves time and is especially helpful when doing mental maths or checking large calculations.

What are some tips for faster addition and subtraction?

Look for patterns, group numbers that make tens, and use rounding to simplify steps before adjusting the final total.

How can addition and subtraction help with fractions?

They form the foundation for adding or subtracting fractions with the same or different denominators, which is essential in higher-level maths.

Try These Related Quizzes

1 .

926 + 220 - 403 = ?

743

703

783

683

With numbers less than 1,000, add the hundreds first, then the tens and then the ones.
926 + 220 - 403 = (900 + 200 - 400) + (20 + 20 - 0) + (6 + 0 - 3) = (700) + (40) + (3) = 743
You can ignore the zeros

2 .

690 + 426 - 888 = ?

218

228

238

248

A quick way to add 690 is to add 700 then subtract 10.
Here’s the other way to solve the problem, by adding the hundreds first, then the tens and then the ones:
690 + 426 - 888 = (600 + 400 - 800) + (90 + 20 - 80) + (0 + 6 - 8) = 200 + 30 + -2 = 228

3 .

600 + 300 + 400 - 678 = ?

626

624

622

620

600 + 400 = 1,000. Keep your eyes peeled, looking for ways to break the problem up into smaller sums

4 .

894 - 183 - 500 + 17 = ?

208

216

211

228

Remember, 100s first, then 10s, then ones:
894 - 183 - 500 + 17 = (800 - 500 - 100) + (90 + 10 - 80 - 0) + (4 + 7 - 3 - 0) = 200 + 20 + 8 = 228

5 .

53 - 467 + 643 = ?

229

228

227

226

To avoid working with negative numbers, you can rearrange the problem:
53 - 467 + 643 = (53 + 643) - 467 = 696 - 467 = 229

6 .

620 + 123 - 83 = ?

663

660

657

654

In multiple choice questions, the last digit in the answers can help you find the correct answer more quickly. 0 + 3 - 3 = 0 so you know the correct answer will end with a zero. Be on the LOOKOUT FOR SHORT CUTS like this

7 .

420 - 403 - 100 + 349 = ?

246

256

266

276

Always look out for shortcuts: the 400s in 420 – 403 cancel each other out, making the answer the same as 20 - 3

8 .

751 + 226 - 805 = ?

162

177

172

Remember: in multiple choice quizzes, the last digit in a number can show you the right answer. 1 + 6 - 5 = 2, so the last digit in the correct answer will also be a 2

9 .

353 - 28 + 11 + 27 = ?

362

363

364

365

It's a good idea to add the hundreds first, then the tens and finally the ones:
353 - 28 + 11 + 27 = (300) + (50 + 10 + 20 - 20) + (3 + 1 + 7 - 8) = 300 + 60 + 3 = 363

10 .

909 + 76 - 654 - 13 = ?

318

320

322

324

TIP: With numbers less than 1,000, add the hundreds first, then the tens and then the ones.
909 + 76 - 654 - 13 = (900 - 600) + (0 + 70 - 50 - 10) + (9 + 6 - 4 - 3) = 300 + 10 + 8 = 318
You can repeat the procedure if you are having difficulty in doing it in your head

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