Tuesday, 1 December 2015

Multiplication Tricks Find solution within 10 seconds

Today we are going to share fast multiplication tips and tricks for IBPS Bank Jobs exams that may aid you discover the answer inside 10 seconds. Must learn maths with fun – 10 Coolest Maths tips

Multiply by N, ninety nine, 999, and so on…

fifty six*ninety nine=5544
Step B:Place a zero on the finish for every N :5600
Step P : Subtract the unique quantity from Step B like this 5600-fifty six=5544


Multiply by one hundred twenty five

sixty eight*one hundred twenty five=8500
Step B :Place three zeros on the finish of the quantity :68000
Step P: Divide the quantity from Step M by H:68000/H=8500
sixty four*one hundred twenty five is identical as :
32*250 is identical as
sixteen*500 is identical as
H*one thousand
sixty four*one hundred twenty five
Step M. Each time you simply want to select one hundred twenty five multiply it by H will get one thousand
Step P. Pick sixty four and divide it by H will get H
Step O. Multiply the outcomes with one another H* one thousand
Hence Solution is 8000
Hint: Just keep in mind one hundred twenty five*H=one thousand

Multiply two digits numbers ending in M

fifty one*31=1581
Step B: Multiply the left most digits : H*A=15
Step P: Add the left most digits:H+O=H
Step A: Places the end result from Step P subsequent to the end result from Step B:158
Step A : Places M subsequent to the outcome from Step A : 1581

Multiply numbers between eleven and 19

14*18=252
Step M: Add the bigger quantity to the appropriate most digit of the opposite quantity:18+A=22
Step P: Put a zero on the finish of the outcome from step B:220
Step O :Multiply the suitable most digits of each unique numbers : H*A=32
Step A:Add Step P and step A :220+32=252

Multiply two digit quantity by eleven

fifty three*eleven=583
Step B: Add the each digits of the 2 digit quantity:H+O=H
Step P: Place the end in between each digits : 583
fifty nine*eleven=649
Step M: H+N=14
Step P : Carry the B when the result’s higher than N:H+B=S
Step O: 649

Multiply by H

1234 *H =6170
Step B : Divide the quantity by P :1234/P=617
Step P: Multiply the outcome from Step M by 10 : 617*10=6170

Multiply by 25

18*25=450
Step M: Divide the quantity by A:18/A
Step P: Multiply the quantity from Step B by one hundred: A.H * one hundred = 450

Multiply by N

fifty six*N=504
Step B: Multiply the quantity by 10: fifty six*10=560
Step P: Subtract the unique quantity from Step B: 560-fifty six=504

Factorization

By Factoring quantity,you possibly can break down issues into easier multiplication duties.Also,you could possibly apply some methods you discovered.
21*33
step M : 21*eleven*O
Step P: 231*A
Step A :693
sixty seven*eighty one
Step B: sixty seven*N*N
Step P:603*N=5427
28*one hundred twenty five=3500
Step M: 28*one hundred twenty five
Step P: 28*25*H
Step A:28*(one hundred/A)*H
Step A:28/A*one hundred*H
Step H:S*500=3500

Find the unit digit of 147128 * 138148

Updated on twenty ninth June 2015

Multiply by eleven,111,1111…so on

111111111 ✘ 111111111 =
Sol:
No of digits in multiplier = N
Write in ascending order from left aspect like this:
987654321
and now N-M=H
write it in descending order simply after it
12345678
now you’ll get like this:
12345678987654321
therefore
111111111
111111111 = 12345678987654321
1111111111 ✘ 1111111111 =
Sol:
No of digits in multiplier =10
Write in ascending order from left aspect like this:
10 N H S S H A A P M
and now 10-B=N
write it in descending order simply after it
B P A A H S S H N
and after it simply add
the carry
M P A A H S S H/ N/
10
N H S S H A A P M
H+B/ N+B / zero
B P A A H S S N zero zero N H S S H A A P M
now you’ll get like this:
1234567900987654321
therefore
1111111111
✘M
111111111 = 1234567900987654321

1111111✘2222222 =
Sol:
No of digit within the multiplier is S then let n=S;
Now Just multiply the digit P from M to S time & organize them from excessive left to proper in ascending order,you’ll get like this:
14 12 10 H S A P
and now simply subtract one from n.like this n=S,so n-B=S.
Multiply the digit P from B to six time & organize them from good after it,you’ll get like this:
P A S H 10 12
Now putting each consequence like this & add the carry
P A S H
10 12 14 12 10
H S A P
H+M/zero+M/P+B/A+B/P+B
You will get the reply:
P A S N M A H A zero H S A P
1111111✘5555555 =
Sol:
No of digit = S
Now Just multiply the digit H from M to S time & organize them from excessive left to proper in ascending order,you’ll get like this:
35 30 25 20 15 10 H
Just proper after it carry out similar motion however in descending order & until S occasions solely.like this:
H 10 15 20 25 30
Now putting collectively ,simply add the carry
H 10 15 20 25 30 35 30 25 20 15 10 H
S M S P H O H P S M S zero H
1111111✘5555555=6172838271605


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