Addition Trick for Adding Two Digit Numbers

Adding Two Digit Numbers Trick

Let us begin with the basic method of adding two numbers

Take the example of 71 + 69

This is the usual method which we do with the help of pen and paper

Are you interested to do these calculations mentally?

Predict Sum of 5 Digit Numbers Math Trick

Magic Addition Trick: Predicting Sum of a series of 5-digit numbers  

Ask someone to write a number, say a 5-digit number. (Can be a 2-digit.....3-digit.....4-digit....etc...…).

Leapfrog Addition of Fibonacci Sequence

Leapfrog Addition of Fibonacci sequence and the Golden (Ratio) prediction

This trick combines a quick mental calculation with an astonishing prediction.

The Fibonacci sequence is a series of whole numbers in which each number is the sum of the two preceding numbers. Beginning with 0 and 1, the sequence would be 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233… etc.

Speed Addition Left to Right Approach

Most of us are taught to do math on paper from right to left. And that's fine for doing math on paper. But if we want to do math in our head (even faster than we can on paper) there are many good reasons why it is better to work from left to right.After all, we read numbers from left to right, we pronounce numbers from left to right, and so it’s just more natural to think about (and calculate) numbers from left to right. When we compute the answer from right to left (as we probably do on paper), we generate the answer backward. That’s what makes it so hard to do math in our head.