Square 2 Digit Number: UP-DOWN Method

Square a 2 Digit Number, for this example 37:

Finger Math: 9X Rule

To multiply by 9,try this:

(1) Spread your two hands out and place them on a desk or table in front of you.

Square a 2 Digit Number Ending in 5

For this example we will use 25

• Take the "tens" part of the number (the 2 and add 1)=3
• Multiply the original "tens" part of the number by the new number (2x3)
• Take the result (2x3=6) and put 25 behind it. Result the answer 625.

Try a few more :

75 squared ... = 7x8=56 ... put 25 behind it is 5625.

MULTIPLY UPTO 20X20 IN YOUR HEAD

In just FIVE minutes you should learn to quickly multiply up to 20x20 in your head.  With this trick, you will be able to multiply any two numbers from 11 to 19 in your head quickly, without the use of a calculator.

BODMAS RULE

B      Brackets first
O      Orders (ie Powers and Square Roots, etc.)
DM   Division and Multiplication (left-to-right)
AS     Addition and Subtraction (left-to-right)

EX :    

What is the result of 3+3×3+3=?

the way you would solve this is:

1.) 3+3x3+3 - The first step this problem is to see all is used in this equation. You will do this by going through the PEMDAS this means:

P- Parentheses ( or )

E- Exponents/ I can’t show you what it looks like but an example is 5 to the 2 power. This does not mean 5x2. You would do 5x5.

M and D- Multiplication and Division (from left to right). There are multiple signs for Multiplication such as ( x ,. ,*) and Division is ➗ or can be shown as a fraction.

A and S- Addition and Subtraction (from left to right) + and -

You may remember this from Elementary school when you most likely first learned these steps from the phrase “ Please Excuse My Dear Aunt Sally”.

In this equation, there is no parentheses or exponents. You will start with the multiplication part of this equation (3+3x3+3). Once you multiply these two numbers you will end up with:

3+9+3

2.) The second step the this equation is to add the first 3 to the 9 and after you do this you will end up with;

12+3

3.) The last step of this equation is to add the 3 to the 12 once you do this you will have your final answer:

15

When you work this out on a piece of paper it should look like this:
3+3x3+3

3+9+3

12+3

15

Once you get more advance in these type of equations you will look for brackets [ ].

CUBE ROOT TRICK