# Mastering Class 4 Mental Math: Tips and Tricks

### Swarnali Saha

###
Founder, Welcome2Maths | 15+ years as a Math Teacher & Life Skills Coach

## Introduction

Hi, Dear Children! Are you ready to become a whiz at Class 4 mental math? Let me share some tips and tricks that will make math problems feel like a breeze. With practice and the right strategies, you can boost your confidence and speed. Plus, we’ll reference some great resources from the Welcome2Maths master calculation course to help you along the way.

## Simplifying Addition and Subtraction

One of the first things we’ll tackle is breaking down addition and subtraction problems into smaller parts. For example, when you're asked to add 863 + 121, break it down into hundreds, tens, and ones: 800 + 100, 60 + 20, and 3 + 1. Adding these together, you get 984. By breaking it down, you make the problem much simpler.

Similarly, for subtraction, you can do the same. If you need to subtract 232 from 555, break it into parts: 500 - 200, 50 - 30, and 5 - 2. This gives you 300 + 20 + 3 = 323. Practicing these methods with mental math worksheets from Welcome2Maths can help solidify your skills.

## Working with Round Numbers

Working with round numbers can make calculations quicker and easier. For example, if you need to add 596 + 380, consider adding 4 to 596 to make it 600. Then, add 600 + 380 to get 980. Finally, subtract the 4 you added, resulting in 976. This trick works for both addition and subtraction and can make your calculations much faster

## Tackling Multiplication

Multiplying can also be made easier with some simple tricks. For instance, when multiplying 453 by 4, start with the largest place value. First, multiply 400 by 4 to get 1600. Next, multiply 50 by 4 to get 200. Finally, multiply 3 by 4 to get 12. Adding these together, you get 1600 + 200 + 12 = 1812.

You can also break down more complex multiplication problems. For example, multiplying 35 by 12 can be split into 35 x 10 + 35 x 2. This can further break down into 30 x 10 + 5 x 10 + 30 x 2 + 5 x 2, resulting in 300 + 50 + 60 + 10 = 420. Using Welcome2Maths’ master calculation course worksheets can give you plenty of practice with these techniques.

## Simplifying Percentages

When dealing with percentages, converting them into simpler problems can be a lifesaver. To find 10% of a number, shift the decimal one place to the left. For example, 10% of 65 is 6.5. For 1%, shift the decimal two places to the left, so 1% of 65 is 0.65. These simple steps can help you tackle more complex percentage problems easily.

For example, to find 5% of 80, you can calculate 10% of 80, which is 8, and then halve it to get 4. Similarly, to find 30% of 900, calculate 10% of 900, which is 90, and then multiply by 3 to get 270. Practicing these steps regularly will enhance your Class 4 mental math skills.

### Multiplying by 11

## Conquering Division

Division can also be simplified by removing common zeros. For instance, if you need to divide 60,000 by 12,000, remove the zeros to simplify it to 60 ÷ 12, which equals 5. This trick works well for division problems where both numbers have the same number of zeros at the end. No need to re-add the zeros in this case. Practice these techniques with Class 4 mental math worksheets from Welcome2Maths to see your speed and accuracy improve.

## Putting It All Together

To truly master Class 4 mental math, practice is key. Utilize the strategies and tricks we’ve discussed to break down complex problems into simpler steps. The more you practice, the more natural these methods will become. Incorporate these tips into your daily math routine, and you'll find yourself solving problems with ease and confidence.

The Welcome2Maths master calculation course offers an abundance of worksheets and exercises designed to help you sharpen your mental math skills. By consistently practicing with these resources, you can build a strong foundation and excel in Class 4 mental math.

Remember, math is not just about numbers; it's about finding patterns, simplifying problems, and approaching each question with confidence. Keep practicing, stay curious, and enjoy the process of learning and mastering mental math. You've got this!