The fantastic 11 rule
There is a great likelihood that many people know the 10 rule. That is, when you multiply a number by 10, you add a 0 at the end of the number. However, the 11 rule may be unknown to many. It is so easy to comprehend.
- As you multiply any two digit number by 11
- Let us take 36 for this example (3-6) and notice the gap in between them.
- Then, sum up the two digits, 3 and 6 together
- Put the result, 9 in the gap in between.
- That is simply done 39 x 11=3 96
However,
Tidak ada komentar:
Posting Komentar