How to Get Better at Mental Math: A Practice Plan

3 min read · Updated 13 Sep 2026 · Originally published 20 Jun 2024

Getting better at mental math starts with a repeatable practice routine. Choose one weak skill, learn a useful method, and compare similar rounds over time. Speed alone is not enough: check that you can explain your answers.

1. Find a skill to work on

Take the 90-second mental math speed test for a balanced sample across six operations. Its report separates first-answer accuracy from speed. A single short result is a starting point, not a fixed measure of your ability.

Alternatively, do a short untimed round in mental math practice. Notice where you pause or need repeated attempts. Record the operation, ranges, question count, and whether you used a timer.

2. Choose one method

Pick a method for the difficulty you noticed. The public strategies guide explains addition, subtraction, multiplication, division, squares, and percentages with worked examples.

Start with manageable numbers. Read the example, cover the answer, and explain each step in your own words. If making tens is new to you, the Making 10 First lesson and its 25-question round are free.

3. Practice without rushing

Use the matching focused practice drill. Work through a small question set without a countdown. Apply the same method until you can choose the next step without guessing.

A ten-minute session could contain two minutes reviewing a method, five minutes practicing, and three minutes checking errors. Adjust the length to what you can repeat comfortably. This is an example routine, not a guaranteed schedule for improvement.

4. Review the cause of each error

Separate a forgotten fact from a wrong method, a carrying error, or a mistyped answer. Write down one troublesome calculation, solve it slowly, then check with an inverse operation or calculator.

If the same error recurs, narrow the number range. If the arithmetic is correct but slow, keep the range stable and practice retrieving the method. Increase one setting at a time so you can see what changed.

5. Measure comparable rounds

Compare the same operation, ranges, question count, and mode. In ordinary practice, retries are allowed and the score measures time to reach correct answers. It does not tell you how many first answers were correct. Use the separate speed test for that measure.

Guest summaries stay on this device. A free account keeps its newest 50 round summaries across devices. Look for a pattern over several comparable rounds rather than treating one personal best as your usual performance.

6. Add time pressure and mixed practice

Once a method is reliable, try a timed round with the same ranges. Keep reviewing mistakes when you speed up. Add another operation after the first feels manageable.

The daily challenge offers ten shared questions and one official attempt per UTC day. First-answer accuracy comes before time in its ranking. Start free and sign in at the end to save your score; public publication is optional. Treat it as a separate challenge, since its question mix changes from day to day.

A simple weekly review

At the end of the week, ask: Which method became easier? Which error keeps appearing? Were the compared rounds actually similar? Pick the next skill from that evidence and repeat the routine.

For the bigger picture, read what mental math means. For selected shortcuts beyond the fundamentals, see mental math tricks.

About the author

Richard Reis

Founder of Mental Math Pro. I built it to sharpen my own mental math skills.