Mathematics can be fun when you know the right tricks. Some people find math difficult, but learning a few clever techniques can change that. In this guide, you’ll explore some of the most amazing math tricks that will make numbers easy to handle.

1. The Magic of Multiplying by 11

Multiplying any two-digit number by 11 is simple. Just follow these steps:

1. Take the two digits of the number and separate them.
2. Add those two digits together.
3. Place the sum between the original digits.

Example:
23 × 11 → Separate (2 _ 3) → Add (2 + 3 = 5) → Answer: 253

If the sum is greater than 9, carry over the extra digit.

Example:
57 × 11 → (5 _ 7) → (5 + 7 = 12) → Carry 1 → Answer: 627

2. Squaring a Number Ending in 5

Squaring numbers ending in 5 is easy using this trick:

1. Multiply the first digit by itself plus one.
2. Write 25 at the end.

Example:
25² → (2 × 3) = 6 → Attach 25 → Answer: 625

45² → (4 × 5) = 20 → Attach 25 → Answer: 2025

3. Quick Multiplication by 5

To multiply any number by 5 instantly:

• If the number is even, divide it by 2 and add a zero.
• If the number is odd, subtract 1, divide by 2, then add 5 at the end.

Example:
86 × 5 → (86 ÷ 2) = 43 → Add zero → 430
73 × 5 → (72 ÷ 2) = 36 → Add 5 → 365

4. The 9 Multiplication Finger Trick

Use your fingers to multiply any number by 9:

1. Hold up both hands with fingers spread.
2. Lower the finger that represents the number you’re multiplying.
3. Count the fingers on the left (this is the tens place).
4. Count the fingers on the right (this is the ones place).

Example:
9 × 4 → Lower the 4th finger → Left: 3 fingers, Right: 6 fingers → Answer: 36

5. Fast Division by 5

Dividing any number by 5 quickly is simple:

1. Multiply the number by 2.
2. Move the decimal point one place to the left.

Example:
245 ÷ 5 → (245 × 2) = 490 → Move decimal → 49.0

6. Finding Percentages Quickly

An easy way to find percentages is by reversing the numbers.

Example:
Instead of calculating 40% of 25, try 25% of 40 (which is easier).
25% of 40 = (40 ÷ 4) = 10

This trick saves time with complex calculations.

7. Multiplying Large Numbers Easily

If two numbers are close to 100, use this trick:

1. Subtract each number from 100.
2. Add the differences.
3. Subtract that sum from 100.
4. Multiply the differences for the last two digits.

Example:
97 × 96 → (100 – 97 = 3, 100 – 96 = 4)
(97 – 4) = 93, (3 × 4) = 12
Answer: 9312

8. The Rule of 72 for Doubling Money

If you want to know how long it will take for an investment to double, use 72 ÷ Interest Rate.

Example:
At 8% interest, 72 ÷ 8 = 9 years to double your money.

9. Quick Addition of Large Numbers

Instead of adding large numbers directly, round them up and adjust.

Example:
497 + 289 → Round to (500 + 290) = 790 → Subtract extra (3 + 1) → Answer: 786

10. Easy Square Roots

If a number is close to a perfect square, use this trick:

Example:
√50 → Closest perfect square is 49 (√49 = 7). Since 50 is slightly above 49, estimate 7.1.

Conclusion

These math tricks make calculations quicker and easier. With practice, you’ll be able to perform complex math in seconds. Whether you’re solving problems in school or handling finances, these shortcuts will save time and improve accuracy. Start using them today, and impress everyone with your math skills!