
Ever felt the clock ticking during those tricky CeMAP calculation questions? Time pressure can dent your confidence and slow you down. Yet, a few simple techniques can help you work faster and stay accurate. In this article, we share five practical CeMAP maths tricks to shave off precious minutes
Each tip comes with a clear example and a short Tutor Tip to keep you on track. By the end, you will feel more confident tackling mortgage maths. Ready to move at pace? Let’s begin.

Memorise Key Formulas with Mnemonics
Why It Works
Relying on memory rather than searching through notes saves seconds. Mnemonic devices turn complex formulas into catchy phrases.
How to Apply
- Loan-to-Value (LTV): “Loan Over Value X 100.”
- APR Conversion: “Annual Rate ÷ 12 times 100.”
- Interest Rate Swap: “Fixed minus Floating.”

Tutor Tip:
Create small flash-cards and review them for five minutes each day. Keep them by your desk or on your phone.
Simplify Percentages Using the “10% Rule”
The 10% Shortcut
Dividing by 10 gives you 10%. Halve that to find 5%, or double to find 20%. You can then adjust for other rates.
Step-by-Step Example
To find 3.75% of £200,000:
- 10% is £20,000.
- 5% is half of that, £10,000.
- 1% is one-fifth of 5%, £2,000.
- 75% is 3 × £2,000 + 0.75 × £2,000 = £6,000 + £1,500 = £7,500.
Round Numbers Strategically
Quick Rounding Techniques
Rounding to the nearest ten or hundred can cut calculation time. You only need the final answer within a small margin of error.
Practice Scenario
Compare exact versus rounded calculations:
- Exact: £198,642 × 3.68% = £7,315.47
- Rounded: £199,000 × 3.7% ≈ £7,363
Time saved on the second method can be up to 30 seconds.

Tutor Tip:
Decide your acceptable error (for example, ±£50) before you begin.
Use a Consistent Calculation Framework
Framework Steps
- Identify the data.
- Choose the formula.
- Plug in the numbers.
- Check your answer.
Benefits
Having a routine reduces hesitation. You won’t waste time deciding what to do next.


Tutor Tip:
Write your four-step framework at the top of your scratch pad as soon as the exam starts.
Practice Under Timed Conditions
Why Timing Matters
Timed drills build speed and accuracy. You learn to judge how long each question takes.
How to Structure Practice
- Set a 30-minute timer.
- Work through 10 mixed mortgage questions.
- Note which steps take longest.

Tutor Tip:
Use a simple kitchen timer. It mimics exam stress better than a phone.
Frequently Asked Questions
How many marks are allocated to maths in CeMAP?
Maths questions account for about 25% of the exam. Every minute you save can boost your overall score.Can I use a calculator in the CeMAP exam?
Yes. You must use the on-screen financial calculator. These tricks still apply when entering numbers.What’s the best way to remember mortgage formulas?
Combine flash-cards with short mnemonic rhymes. Repeat the cards daily and test yourself.Conclusion
These five CeMAP maths tricks are simple to learn and quick to apply. By using mnemonics, the 10% rule, smart rounding, a clear framework and timed practice, you can cut exam time and reduce stress. Ready to explore more support? Find out about our CeMAP training courses for guided learning and expert tutor feedback.
Ready for more exam-style examples?
Book our CeMAP Home Study course or visit our website for full training resources:
https://cemap123.co.uk/home-study-training/