MUST KNOW MATH TRICK

 MUST-KNOW Handy Trick For Squaring Numbers Ending In Five 

Here's a handy trick for squaring numbers ending in 5:

**Quick Squaring Trick for Numbers Ending in 5:**

1. Take any number ending in five.

2. Multiply the digit in the tens place by itself plus one.

3. Append 25 to the result.

For example:

- "Fifteen squared" (\(15^2\)):

  - Take the digit in the tens place (1) and multiply it by itself plus one (1 * 2 = 2).

  - Append 25 to the result: 225.

  - So, "Fifteen squared" is 225.

- "Thirty-five squared" (\(35^2\)):

  - Take the digit in the tens place (3) and multiply it by itself plus one (3 * 4 = 12).

  - Append 25 to the result: 1225.

  - So, "Thirty-five squared" is 1225.

This trick provides a quick and easy way to square numbers ending in 5, saving time in mental calculations.

HOPE YOU FOUND IT HELPFUL

MUST LEARN math tricks, Multiplication made EASY!

 

Easy Math Trick YOU MUST LEARN!

Quick Addition Trick for Multiples of 11:

To quickly add multiples of 11, take the sum of the two digits in the number and place it in the middle. For example:

11 x 3 = 33 (1 + 1 = 2, so place 2 in the middle)

11 x 6 = 66 (1 + 1 = 2, so place 2 in the middle)

11 x 9 = 99 (1 + 1 = 2, so place 2 in the middle)

This works for larger numbers as well:

11 x 23 = 253 (2 + 3 = 5, so place 5 in the middle)

11 x 47 = 517 (4 + 7 = 11, so place 1 in the middle and carry over the 1)

It's a handy trick for mental calculations involving multiples of 11!

Here is another trick which may come in handy:

Easy multiplication math trick, A MUST KNOW

Easy Math Trick (Two number multiplication)

To multiply two two-digit numbers, such as 23 and 45, a helpful method involves breaking each number into its tens and units. For instance:

23 can be expressed as (20 + 3).

45 can be expressed as (40 + 5).

Next, multiply each part of one number by every part of the other number:

Multiply 20 (from 23) by both parts of 45 (20 * 40 = 800, 20 * 5 = 100).

Multiply 3 (from 23) by both parts of 45 (3 * 40 = 120, 3 * 5 = 15).

Finally, sum up (meaning add them, you should know this by the way) all the results:

800 + 100 + 120 + 15 = 1035.

This method, though it might seem a bit intricate initially, is particularly advantageous for younger children as it breaks down the multiplication process into simpler steps, making mental calculations more accessible with practice.