Quantitative Aptitude Tips and Tricks

Quantitative Aptitude:

Necessary for appearing in:
IBPS BANK PO CAT,MAT,GRE,GATE ,RRB,LIC,CAMPUS RECRUITMENT,AND MANY MORE NATIONALIZED EXAMS

WHAT WE NEED TO GET THROUGH THEM?
1.SPEED
2.ACCURACY
In this blog we are going to cover almost all topics with best tips for enhance your ability in either of the requirements(speed and accuracy )
Before going to start the topics , we need to remind the things that we left at school..

 going back to the school.........:-)

MULTIPLICATION OF TWO THREE DIGIT NUMBERS in 5secs:

Problem1:   product  two numbers 121 & 310 is?
options:
a)36520
b)37510
c)35710
d)32610


sol:121 x 310...    answer going from right digit to left...
please follow this figure

this example is simple one all product yields single digit numbers
if the product gives two digit number ................
dont worry about it simply add the carry number to its next digit(right digit to left...)

see the following:
979 x 685....answer going from right digit to left...
last digit is 9x5=45, write 5 carry 4
next digit 7x5 + 9x8 = 35 + 72= 107 (+4) = 111, write 1 carry 11
next digit 9x6 + 7x8 + 9x5 = 54 + 56 + 45 = 155 (+11) = 166, write 6 arry 16
next digit 9x8 + 7x6 = 72 + 42 = 114 (+16) = 130, write 0 carry 13
next digits 9x6 = 54 (+13) = 67. Write this all in.
Answer is 670615
this type of multiplication  will be explained in 4digit multiplication in the next post