The Vedic Sutra ** “Sankalana vyavakalanabhyam”** means

**. Let us understand this sutra with an example.**

*“By Addition and by Subtraction”***68 – 29 = ?**

Here, 29 is 1 less than the nearest whole number 30, so :

- Step 1: Increment 29 by 1 to make 30
- Step 2: Increment 68 by 1 to make 69 to nullify the increment of Step 1

The above can be represented in expression as 68 – 29 = (68+1) – (29+1) = 69 – 30 = 39.

Isn’t it easier to subtract 30 from 69 than 29 from 68?

Let us do it mentally with another example:

**53 – 29 = ?**

**In short, when subtracting a number close to a multiple of 10, just subtract from the multiple of 10 and correct the answer accordingly.**

Let’s us practice few more questions:

**a **38 – 19 ** b **57 – 28 **c **46 – 8 **d **95 – 27 **e **74 – 28 ** **

**f **33 – 29 **g **217 – 59 **h **176 – 109