Bankers Adda is also known to be called as Easy Shortcuts adda.
Today we came back with a New Easy Shortcuts
Go through the shortcut and if you have any doubts please contact bankers adda in the comment section.
Easy Multiplication Shortcut 14
Multiplying two 2-digit numbers (difference of 10)
Choose a 2-digit number.
Select a number either 10 smaller or 10 larger.
Find the middle number of the two (the average).
Square this middle number (multiply it by itself).
Subtract 25 from this square.
Ex:
If the first number is 78, you might pick 88 as the second number (10 larger).
The middle number (the average) is 83.
Square this middle number: 83 × 83 = 6889.
Subtract 25 from this square: 6889 - 25 = 6864
Then 78 × 88 = 6864.
Checkout other Topics
Aptitude Quiz Banking Quiz Computer Quiz
Daily Quiz English Quiz GK Quiz
English Learning Tips Invention Quiz Reasoning Quiz
Interview Tips Abbreviations Dates to Remember
Today we came back with a New Easy Shortcuts
Go through the shortcut and if you have any doubts please contact bankers adda in the comment section.
Easy Multiplication Shortcut 14
Multiplying two 2-digit numbers (difference of 10)
Choose a 2-digit number.
Select a number either 10 smaller or 10 larger.
Find the middle number of the two (the average).
Square this middle number (multiply it by itself).
Subtract 25 from this square.
Ex:
If the first number is 78, you might pick 88 as the second number (10 larger).
The middle number (the average) is 83.
Square this middle number: 83 × 83 = 6889.
Subtract 25 from this square: 6889 - 25 = 6864
Then 78 × 88 = 6864.
Checkout other Topics
Aptitude Quiz Banking Quiz Computer Quiz
Daily Quiz English Quiz GK Quiz
English Learning Tips Invention Quiz Reasoning Quiz
Interview Tips Abbreviations Dates to Remember
