How to Get Better at Mental Math?

How to Get Better at Mental Math?

Mental math is a valuable skill that allows individuals to perform arithmetic calculations in their head without the need for calculators or pen and paper. It's not only useful in academic settings but also in everyday life, such as calculating tips, budgeting, or making quick decisions. Here are some techniques and applications to help improve your mental math abilities.

Basic Techniques

Rounding Numbers

One of the simplest ways to facilitate mental calculations is by rounding numbers to the nearest ten or hundred. This technique simplifies the numbers involved, making addition and subtraction much easier. For example, to add 644 and 238, round them to 650 and 240, respectively, add those numbers to get 890, and then subtract the excess that was added during rounding.

Multiplication Tricks

Multiplication can be made easier by using certain tricks. For instance, when multiplying by 5, you can multiply by 10 and then take half of the result. Multiplying by 9 can be simplified by multiplying by 10 and then subtracting the original number.

Division Tricks

For division, one can use the concept of halving, especially when dividing by 5. You can multiply the number by 2 and then divide by 10 to get the result.

Using Number Patterns

Recognizing and using number patterns can also speed up mental calculations. For example, any number times 1 remains the same, and any number times 10 has a zero added to its end.

Speed Calculation

Practice Regularly

To increase speed, regular practice is essential. You can pick two large numbers and practice adding, subtracting, multiplying, and dividing them in your head.

Mental Math Games

Engaging in mental math games can also improve speed and accuracy. There are apps and online platforms that offer interactive exercises to practice mental math.

Visualization Techniques

Visualizing the problem and breaking it down into smaller, more manageable parts can help solve complex problems faster.

Real-life Applications


When shopping, use mental math to add up prices or calculate discounts without relying on a calculator.


In cooking, mental math is useful for adjusting recipes, such as doubling ingredients or converting measurements.

Time Management

Calculate the time needed for various activities or determine how much time is left until a certain event.

Money Management

Keep track of expenses, budget, and savings using mental math. This helps in making quick financial decisions.


Estimation is a valuable skill in mental math. It allows you to make quick, approximate calculations that are often sufficient for everyday purposes.

In conclusion, improving mental math skills involves a combination of learning basic techniques, practicing speed calculations, and applying these skills in real-life situations. By incorporating these strategies into daily routines, individuals can become more confident and efficient in their mental arithmetic abilities.