sourabh garg

if there is alternate number and we want to multiply them so for this we take the mid value and square it(mid value) then subtract 1 from it so we easily get the output of that two alternate number.

for example : 24*26
so middle value is 25
square of 25=625
subtract-1 then 
625-1=624

rajesh

now i am going to describe the multiplication of two numbers

this method is applied for few numbers like 24*26, 33*37, 42*48

if you observe , sum of unit place digits of two numbers is 10 & tens place digit are same.
so this method is applicable to these numbers only.

24*26
=

6*4=24
2(2+1)=6
so answer is 624

try remaining numbers also..................

pradeesh

its not working if above 40
ie 42 * 47

ur ans must be
2014

but ans is 1974

pls say some logic to find this too

sam

Pradeep, read rajesh's post carefully. Sum of unit place digits should be 10
so you cannot apply this to 42*47

42*48 = 2016 which can be done using his method

pinki

i need simple tricks to solve sums

Atishay

What about 3 or more digit number's multiplication.?

chand

3digit multiplication will be done as follows. multiply 325*432

step-1: u*u= 2*5 = 10, write 0 at unit place. carry=1
step-2: u*t+t*u+1(ie.carry )=20, write 0 at ten place, carry=2
step-3: u*h+h*u+t*t+2(carry) =34, write 4 at hundred place, carry=3
step-4: t*h+h*t+3(carry) = 20 write, 0 at thousand place, carry=2
step-5: h*h+2(Carry ) =14 write 14 at ten thousand place.

ans= 140400

AAAA

Am not get how 56=10 that step can u please explain 

manpreet kaur

Lets multiply two numbers:

Abhishek

56
24
BY APPLING CRISS CROSS

6*4=24
5*4+6*2=32+2=34
5*2=10
10+3=13
FINALLY =1344(by taking carry 2,3)