Class 4 mental maths - 7 Practices to Improve

Developing your mental math skills for class 4 can be incredibly helpful in life. You should try to apply your mental math abilities at least two or three times per day to boost your confidence and quickness in mental math for class 4. Flashcards are excellent for learning specific types of problem-solving strategies or for memorizing multiplication and division tables. Another great way to evaluate your skills is by taking online math tests.

There are also many mental math of class 4 worksheets available online that you can practice daily to improve your skills. Here are the top 7 practices that can greatly enhance your mental math of class 4.

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Breaking addition and subtraction problems into parts;


One of the best practices for improving your mental math of class 4 is to break addition and subtraction problems into parts. For example, if you are given the problem 863 + 121, you can solve it easily by breaking it into groups of ones, tens, and hundreds: 800 + 100, 60 + 20, and 3 + 1. Adding these parts together, you get 984 (900 + 80 + 4). When you break it down like this, solving the question becomes much easier.

You can do the same when subtracting numbers. For example, if you are asked to subtract 232 from 555, you can easily calculate it in your head by breaking it into groups of hundreds, tens, and ones: 500 - 200, 50 - 30, and 5 - 2, which is 300 + 20 + 3 = 323. You can refer to mental math of class 4 worksheets to find many questions to practice and improve your skills.

Round numbers can be achieved by changing the problem.

You can make the appropriate modifications to get round numbers after you've solved the problem. Dealing with round numbers is much quicker for the majority of us. You should keep a mental record of the changes you made so that you can make adjustments to reach the precise answer at the end. For instance: You can consider adding 4 to 596 to round it up to 600, then adding 600 + 380 to get 980 for the addition of 596 + 380. To undo the rounding, take 4 off of 980 to get 976. Practicing this method more often with the help of mental maths class 4 worksheets can improve your mental calculation skills.

Practice adding many digits at once.

One of the key strategies in improving your mental math of class 4 is understanding that the order in which you solve addition problems doesn't change the result. You can simplify calculations by grouping numbers that sum up to 10 or other round figures, making it easier to solve in your head.

For instance, let's take the equation 7 + 2 + 9 + 13 + 8 + 61 = 70. By rearranging the numbers into pairs that add up conveniently: 7 + 13, 2 + 8, and 9 + 61, you can quickly round them to 10s and easily calculate: 20 + 10 + 70 = 100. Practicing this regularly can greatly enhance your class 4 mental math skills.

Multiply from the left to the right.

When tackling mental math problems in class 4, You know it's crucial to keep track of hundreds, tens, and ones. While many people start multiplying from the ones place (from Right side) when using paper, mentally it's often easier to work backwards. For instance, instead of starting with 453 x 4, begin with 400 x 4, then move to 50 x 4 for 200, and finally 3 x 4 for 12 . So it's 1600+200+12 = 1812. This approach can be practiced effectively using mental math class 4 worksheets.

Breaking down larger numbers into smaller parts can also simplify multiplication. Take 35 x 12 for example: Divide it into 35 x 10 + 35 x 2, which further breaks down into 30 x 10 + 5 x 10 + 30 x 2 + 5 x 2, totalling 300 + 50 + 60 + 10 = 420. Adopting this method can significantly enhance your skills in class 4 mental math.

Mental Multiplication: How to Multiply Numbers with 11 Mentally

Multiplying numbers by 11 can be done very quickly using a simple trick. This involves adding the digits of the number and placing the result between them. For example, to multiply 36 by 11, first separate the digits into 3 and 6. Add them together to get 9, then place the result between the original digits, resulting in 396. This method works for any two-digit number and can be a real time-saver. You can check out mental math of class 4 worksheets and practice this technique to become even faster at it.

Simplify issues involving numbers that terminate in zero.

When dealing with mental math problems in class 4, it's helpful to simplify numbers that end in zero. You can ignore the zeros initially and add them back in at the end:

Addition: If all numbers end in zeros, you can omit these zeros temporarily. For example, 850 + 120 can be simplified to 85 + 12, which equals 97 once the zeros are restored.

Subtraction: Similarly, when subtracting numbers that end in zeros, subtract the non-zero parts first. For instance, 1000 - 700 simplifies to 10 - 7, which equals 3. Remember, you can only eliminate the zeros that all numbers share; any additional zeros, like in 1000, must remain.

Multiplication: Ignore zeros initially, then add them back individually. For example, 3000 x 50 simplifies to 3 x 5, which equals 15. Adding back the zeros gives us 150,000.

Division: The result remains the same even if you remove shared zeros. For instance, 60,000 ÷ 12,000 simplifies to 60 ÷ 12, which equals 5. No additional zeros need to be added back.

Following these techniques can make mental calculations much easier for you. Practicing more mental math class 4 worksheets using these methods will help you improve quickly.

Convert percentage problems into simpler ones.

Understanding how to convert percentage problems into simpler ones is key to improving your mental math skills in class 4. Here are some helpful tips:

Awareness of Percentages: Recognize which percentages are easier to calculate mentally. If you're stuck on a percentage problem, try flipping the numbers around. For example, 10% of 79 is the same as 79% of 10.

Calculating Percentages Easily: Shift the decimal one place to the left to find 10% of a number (e.g., 10% of 65 is 6.5). Shift it two places to the left for 1% (e.g., 1% of 65 is 0.65). These techniques can help you quickly calculate more challenging percentages in your head.

Using Proportions: Break down percentages into simpler units. For instance, 5% is half of 10%, so 5% of 80 can be found as (10% of 80) ÷ 2 = 8 × 12 = 4.

Practice Makes Perfect: For example, 30% of 900 is the same as 10% of 900 multiplied by three, which equals 90 × 3 = 270. Practicing these methods with mental math class 4 worksheets can really reinforce your skills.

Conclusion

Learning various practices and tips or techniques from class 4 mental maths can be very helpful to children in helping them become faster in doing calculations.


Welcome2Maths is a leading platform where you can learn class 4 mental maths from Swarnali Saha, the top math skills mentor in India. Enroll your child in the math course at Welcome2Maths now and help them become a master of mental calculations!

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