Addition Shortcuts (Mental Maths)

In this post, we will show you how to do Additions Mentally. Have a look at the Following Examples........

When we are adding three-digit numbers, first add-two-digits at a time (Units and Tens Place).
42 + 57 + 29 +| 46 + 25 = 199
To add 42 and 57, mentally treat 57 as 50 + 7 ( Because 50 would facilitate quick addition)
So, 42 + 57 = (42 + 50) + 7 = 92 + 7 = 99
Similarly, 99 + 29 = (99 + 20_ + 9 = 128
128 + 46 = (128 + 40) + 6 = 174
174 + 25 = (174 + 20) + 5 = 199
The last two digits (the units place and the tens place) of the addition are 99, while the digit 1 is to be carried forward).
Now Add,

So, the answer of the above addition is 3099 (initially, it may look lil confusing. Just practice this method and you can find how efficient this method is :)