7 Mental-Math Habits to Build Before the KUAT

Because KUAT Maths has no calculator, mental arithmetic is a scored skill — not a side note. These seven habits, practised a few minutes a day, turn arithmetic from a stressor into a time-saver. (For the why, see KUAT Maths has no calculator.)

1. Estimate first. Round, get a ballpark, then refine. Catches silly errors instantly.
2. Know your fraction–decimal–percent table cold. ½, ¼, ⅕, ⅛ and their decimals/percents should be automatic.
3. Use friendly numbers. Turn ×25 into ÷4 ×100; turn ×9 into ×10 −1.
4. Master 10% as an anchor. Any percentage is built from 10% and 5% — find those, add or subtract.
5. Multiply left to right. For mental work, starting from the big digits keeps you oriented and faster than the written method.
6. Check by reasonableness. Before committing, ask "is this answer roughly the size I expect?" It catches misplaced decimals.
7. Practise timed. Five questions, four minutes, daily. Make the clock feel ordinary.

How to drill them

Don't do all seven at once. Take one per day, ten quick reps, then rotate. Within two weeks the calculations the exam throws at you start feeling routine — which frees your attention for the actual problem-solving. Pair this with the broader preparation framework.

Want to know which maths topics still trip you up? The free WoWPrep diagnostic finds them — no card needed.