## Education

# Vedic Math Tricks for You

Vedic Math is based on sixteen sutras or principles. These principles are general in nature and can be applied in many ways.

**Admin**26th Feb, 2014 11:23 am

**Vedic Math Tricks**

**1. Is it divisible by four?**This little math trick will show you whether a number is divisible by four or not. So, this is how it works.

6 + (2 X 3) = 12

4 goes into 12 three times with 0 remainder. Therefore 4 goes into 234436 evenly.

**2. Multiplying by 12 - shortcut**So how does the 12's shortcut work?

Let's take a look.

Now multiply the 7 by the 2 of twelve giving 14. Add this to 70 giving 84. Therefore 7 X 12 = 84

17 X 12

Multiply 17 by 2 giving 34.

Add 34 to 170 giving 204.

So 17 X 12 = 204

24 X 12

Multiply 24 X 1 = 24. Multiply by 10 giving 240.

Multiply 24 by 2 = 48. Add to 240 giving us 288

24 X 12 = 288 (these are Seriously Simple Sums to do aren't they?!)

**3. Converting Kilos to Pounds**In this section you will learn how to convert Kilos to Pounds, and Vice Versa. Let's start off with looking at converting Kilos to pounds.

86 x 2 = 172

172 / 10 = 17.2

172 + 17.2 = 189.2

86 Kilos = 189.2 pounds

Let's try:

50 Kilos to pounds:

50 x 2 = 100

100/10 = 10

100 + 10 = 110

50 Kilos = 110 pounds

**4. Adding Time**Here is a nice simple way to add hours and minutes together: Let's add 1 hr and 35 minutes and 3 hr 55 minutes together.

What you do is this: make the 1 hr 35 minutes into one number, which will give us 135 and do the same for the other number, 3 hours 55 minutes, giving us 355. Now you want to add these two numbers together:

135

355

___

490

490 + 40 = 530

**5. Temperature Conversions**This is a shortcut to convert Fahrenheit to Celsius and vice versa. The answer you will get will not be an exact one, but it will give you an idea of the temperature you are looking at.

Fahrenheit to Celsius:

Take 30 away from the Fahrenheit, and then divide the answer by two. This is your answer in Celsius.

Example:

74 Fahrenheit - 30 = 44. Then divide by two, 22 Celsius.

So 74 Fahrenheit = 22 Celsius.

Celsius to Fahrenheit just do the reverse:

Double it, and then add 30.

30 Celsius double it, is 60, then add 30 is 90

30 Celsius = 90 Fahrenheit

Remember, the answer is not exact but it gives you a rough idea.

**6. Decimals Equivalents of Fractions**With a little practice, it's not hard to recall

the decimal equivalents of fractions up to 10/11!

First, there are 3 you should know already:

1/2 = .5

1/3 = .333...

1/4 = .25

Starting with the thirds, of which you already know one:

1/3 = .333...

2/3 = .666...

You also know 2 of the 4ths, as well, so there's only one new one to learn:

1/4 = .25

2/4 = 1/2 = .5

3/4 = .75

Fifths are very easy. Take the numerator (the number on top),

double it, and stick a decimal in front of it.

1/5 = .2

2/5 = .4

3/5 = .6

4/5 = .8

There are only two new decimal equivalents to learn with the 6ths:

1/6 = .1666...

2/6 = 1/3 = .333...

3/6 = 1/2 = .5

4/6 = 2/3 = .666...

5/6 = .8333...

1/8 = .125

2/8 = 1/4 = .25

3/8 = .375

4/8 = 1/2 = .5

5/8 = .625

6/8 = 3/4 = .75

7/8 = .875

9ths are almost too easy:

1/9 = .111...

2/9 = .222...

3/9 = .333...

4/9 = .444...

5/9 = .555...

6/9 = .666...

7/9 = .777...

8/9 = .888...

10ths are very easy, as well.

Just put a decimal in front of the numerator:

1/10 = .1

2/10 = .2

3/10 = .3

4/10 = .4

5/10 = .5

6/10 = .6

7/10 = .7

8/10 = .8

9/10 = .9

Remember how easy 9ths were? 11th are easy in a similar way,

assuming you know your multiples of 9:

1/11 = .090909...

2/11 = .181818...

3/11 = .272727...

4/11 = .363636...

5/11 = .454545...

6/11 = .545454...

7/11 = .636363...

8/11 = .727272...

9/11 = .818181...

10/11 = .909090...

As long as you can remember the pattern for each fraction, it is quite simple to work out the decimal place as far as you want

or need to go! Oh, I almost forgot! We haven't done 7ths yet, have we? One-seventh is an interesting number:

1/7 = .142857142857142857...

See if you notice any pattern in the 7ths:

1/7 = .142857...

2/7 = .285714...

3/7 = .428571...

4/7 = .571428...

5/7 = .714285...

6/7 = .857142...

Notice that the 6 digits in the 7ths ALWAYS stay in the same order and the starting digit is the only thing that changes! If you know your multiples of 14 up to 6, it isn't difficult to,work out where to begin the decimal number. Look at this:

For 2/7, think "2 * 14", giving us .28 as the starting point.

For 3/7, think "3 * 14", giving us .42 as the starting point.

For 4/14, 5/14 and 6/14, you'll have to adjust upward by 1:

For 4/7, think "(4 * 14) + 1", giving us .57 as the starting point.

For 5/7, think "(5 * 14) + 1", giving us .71 as the starting point.

For 6/7, think "(6 * 14) + 1", giving us .85 as the starting point.

Practice these, and you'll have the decimal equivalents of everything from 1/2 to 10/11 at your finger tips! If you want to demonstrate this skill to other people, and you know your multiplication tables up to the hundreds for each number 1-9, then give them a calculator and ask for a 2-digit number (3-digit number, if you're up to it!) to be divided by a 1-digit number. If they give you 96 divided by 7, for example, you can think, "Hmm... the closest multiple of 7 is 91, which is 13 * 7, with 5 left over. So the answer is 13 and 5/7, or: 13.7142857!"

**7. Converting Kilometres to Miles**This is a useful method for when travelling between imperial and metric countries and need to know what kilometres to miles are.

The formula to convert kilometres to miles is number of (kilometres / 8 ) X 5. So lets try 80 kilometres into miles 80/8 = 10 multiplied by 5 is 50 miles!

Another example

40 kilometres

40 / 8 = 5

5 X 5= 25 miles

## MORE from Education

## CBSE Class 10 Hindi Course A & B Syllabus 2020-2021

## ICSE Class 10 Exam 2020- Top 10 Questions in Hindi

## ICSE Class 10 Exam 2020- Top 10 Questions in Biology

## latest from Topper Learning

- Education Franchisee opportunity
- NCERT Solution
- CBSE Class 9 Mathematics
- NCERT Solutions for class 10 Science
- Sample Papers
- CBSE Class 9 Science
- NCERT Solutions for class 10 Maths
- Revision Notes
- CBSE Class 10 Hindi
- CBSE Class 10 English
- CBSE Class 10 English
- CBSE Class 10 Social Studies
- CBSE Class 10 Science
- CBSE Class 10 Mathematics
- Career In Science After 10
- Career In Commerce After 10
- Career In Humanities/Arts After 10
- Ncert Solutions for Class 10
- Ncert Solutions for Class 11
- Business Studies Class 12 CBSE project