Fast operations

  • Thread starter bxluth
  • Start date
  • #1
bxluth
I know that there are some shortcuts to make math operations. For example
When you multiply 11 and another number (23 for exaple) you just write those two numbers like this:

2 3

and then sum them "2+3=5" and the result you write it in the middle:
2 5 3

and that's it.

Can you help me and write those kind of shortcuts, it would really help, thanx :smile:
 

Answers and Replies

  • #2
841
1
You might want to look for a book entitled, The Trachtenberg Speed System of Basic Mathematics.
 

Related Threads on Fast operations

  • Last Post
Replies
9
Views
5K
  • Last Post
Replies
2
Views
605
Replies
3
Views
2K
Replies
2
Views
578
Replies
8
Views
2K
Replies
4
Views
2K
Replies
1
Views
1K
Replies
12
Views
796
Top