School Dekho 22 Jul-2023 537 views

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Math Tricks to Learn for School Students

Mathematics is a fundamental subject that plays a crucial role in a student's academic journey. While understanding concepts and problem-solving techniques is vital, learning math tricks can greatly enhance a student's math skills, speed, and accuracy. Here are some useful math tricks that school students can learn to improve their mathematical abilities and solve problems more efficiently.

Multiplication Tricks:

• - Multiplying by 11: To multiply any two-digit number by 11, simply write down the original number and add the two digits together. Place the sum between the original digits. For example, to multiply 23 by 11, the result is 253 (2 + 3 = 5).
• - Multiplying by 9: To multiply any number by 9, hold out all ten fingers and put down the finger that corresponds to the number being multiplied. The number of fingers to the left of the one put down represents the tens digit, while the number of fingers to the right represents the units digit. For example, 9 x 7 = 63 (six fingers on the left, three on the right).

Division Tricks:

• - Dividing by 5: To divide any number by 5, simply divide it by 10 and multiply the result by 2. For example, 250 ÷ 5 = 50 (250 ÷ 10 = 25; 25 x 2 = 50).
• - Dividing by 9: To divide any number by 9, use a similar technique as the multiplication trick. Hold out all ten fingers and put down the finger that corresponds to the number being divided. The fingers to the left of the one put down represent the tens digit, while the fingers to the right represent the units digit. For example, 63 ÷ 9 = 7 (six fingers on the left, three on the right).

Squaring Tricks:

• - Squaring numbers ending in 5: To square a number ending in 5, multiply the tens digit by the next consecutive number and append 25 at the end. For example, 45^2 = 2025 (4 x 5 = 20; append 25).
• - Squaring numbers near 100: To square a number near 100, subtract the difference between the number and 100 from 10000. For example, 98^2 = 9604 (10000 - (100 - 98) = 9604).

Addition and Subtraction Tricks:

• - Adding multiples of 10: To add multiples of 10 mentally, simply shift the digits one place to the left. For example, 20 + 30 = 50.
• - Subtracting multiples of 10: To subtract multiples of 10 mentally, shift the digits one place to the right. For example, 70 - 50 = 20.

Estimation Tricks:

• - Rounding: When faced with complex calculations, rounding numbers can help simplify the process. Round the numbers to the nearest tens or hundreds and perform the calculations using the rounded numbers for a quick estimate of the answer.
• - Approximation: Instead of calculating precise answers, students can use approximations to quickly estimate the outcome. For example, rounding 23 to 20 and 37 to 40 can be used to quickly estimate 23 + 37 as 60.

Learning and practicing these math tricks not only improves a student's mental math abilities but also enhances their overall mathematical fluency. These tricks promote critical thinking, logical reasoning, and problem-solving skills, which are essential in various aspects of life.

It is important to note that while math tricks are useful for quick calculations and estimations, they should not replace a thorough understanding of mathematical concepts. Students should continue to learn and apply traditional methods to solve complex problems and grasp the underlying principles.

By incorporating these math tricks into their repertoire, school students can build confidence in their math skills and improve their efficiency in solving math problems. Regular practice and application of these tricks will enhance their ability to perform mental calculations, improve accuracy, and increase their overall enjoyment of mathematics.

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