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Fast Calculation Tricks to calculate FASTER by Minoo Jokhi
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I would like to share some Math Tricks with you to show how interesting and easy it can be done mentally. E.g.:
1. 55 multiply 55 = 3025
When we have two numbers same and ending with 5, last two digits of the answer will always be 25 as a rule and first digits i.e. 5 and 6 multiply to get 30 and answer =3025.
2. 45 multiply 55= 2475
When we have two numbers with a differentce of 10 and both ending with 5, last two digits of the answer will always be 75 as a rule --.-d first digits 4 and 5 multiply to get 20 and add the smaller number 4 to 20 to get 24 and the answer = 2475.
3. 42 multiply 11=462
78 multiply 11=858
When we multiply 42 and 11, Just write 4 and 2 leaving sore space and add 4 and 2 to get 6 and the answer 462. And for 78 times 11 write 8 for the last digit of the answer and adding 7 and 8 we get 15 so wrife;5 and carry over 1 and add to 7 to get 8 and the answer 858.
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Archives
Memory Test by Minoo jokhi
Memory Enhancement and Concentration by Minoo Jokhi
Studying Tips to Students to Learn Faster and Face Exams well
Introduction to the fascinating world of Memory Development by Minoo Jokhi
Link Sytem of Memory by Minoo Jokhi
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