Maths, coding, AI & parents
How to get faster at mental maths
Practical ways to improve mental maths speed and accuracy: number bonds, doubling, rounding, partitioning, daily five-minute practice and free games. For children and adults.
Fast mental maths is not magic. It comes from knowing a small set of facts really well and having a few flexible strategies. Here is a plan that works for children and adults.
1. Know the building blocks
Instant recall of these facts frees your brain for harder steps:
- Number bonds to 10 and 20 (7 + 3, 13 + 7)
- Times tables up to 12 × 12
- Squares up to 15 × 15
- Doubles and halves
Practise them with short, timed rounds. Maths Meteors and Bubble Pop Maths turn this into a game.
2. Partition the numbers
Split numbers into friendly parts. For 47 + 36, add the tens (40 + 30 = 70) and then the ones (7 + 6 = 13) to get 83. For 6 × 14, do 6 × 10 = 60 and 6 × 4 = 24, then add: 84.
3. Round and adjust
To add 49, add 50 and take away 1. To subtract 98, subtract 100 and add 2. To multiply by 19, multiply by 20 and subtract one lot of the number.
4. Use doubling and halving
To multiply by 4, double twice. To multiply by 5, multiply by 10 and halve. To work out 15 × 6, think 15 × 2 = 30, then × 3 = 90.
5. Estimate first
Before calculating 48 × 21, estimate: about 50 × 20 = 1,000. Estimation catches silly mistakes and makes you faster because you know what size the answer should be.
6. Practise daily, for five minutes
Speed grows with regular practice. Keep sessions short and stop while it is still fun. Use Maths Practice to work on one skill at a time with instant feedback, and print a mixed worksheet for practice away from a screen.
7. Prioritise accuracy, then speed
Rushing makes errors and wastes time on corrections. Aim for 95 percent accuracy first, then slowly shorten the time.
Common questions
How can I improve my mental maths quickly?
Learn the key facts (number bonds, times tables), practise a few strategies such as partitioning and rounding, and do five minutes a day. Most people notice a difference within two weeks.
Is mental maths a talent or a skill?
It is a skill. People who seem naturally quick have usually practised the basic facts a lot and use efficient strategies.
What is a good mental maths score for children?
It depends on age and curriculum. A useful target is to answer the times tables facts within three seconds each, with very few mistakes.
Can adults improve mental maths too?
Yes. The same strategies work at any age, and adults often improve quickly because they understand why the methods work.
This guide is general information. For exams, follow your school, teacher and official exam board, and use your own judgement about what suits your child.