It is important that you pick up some tricks for IBPS PO, IBPS Clerk, SBI PO, SBI Clerk, SSC CGL, SSC CHSL and other competitive exams. because they help you save time and increase efficiency. This calculation trick will help you multiply numbers close to 100 or 1000.
Multiplication tricks are of great help in competitive exams when you have to solve maximum number of questions accurately in minimum time. Tricks for bank exams are handy and a smart method to multiply big numbers in IBPS PO, IBPS Clerk, SBI PO, SBI Clerk, SSC CGL, SSC CHSL and other competitive exams. You all must have found yourself in a situation when you are only one step away from the answer but that one step involves tedious amount of calculation. These multiplication tricks will ensure you are never in that spot again.
This is the 8th post in the series of tricks for bank exams. Read on for a super quick way to multiply numbers close to 100 and 1000.
Why do you Need Multiplication Tricks?
Relax… We are not here to discuss something you that you learnt when you were probably 7-8 years old! We are going to discuss with you some multiplication tricks. These tricks for IBPS PO, IBPS Clerk, SBI PO, SBI Clerk, SSC CGL, SSC CHSL and other competitive exams are effortless and uncomplicated and will help you do these complicated calculations in just 2-3 seconds because almost every question needs you to multiply numbers. Multiplying with 100 and 1000 is really simple but numbers close to 100 and 1000 is not that simple! Well, let’s change that!
Example of Multiplying Numbers Close to 100 or 1000 with Each Other
What is the answer for-
(i) 98 x 93 (ii) 104 x 112
A. 9882, 11178
B. 8992, 11148
C. 9052, 11168
D. 9114, 11648
Conventional Method of Multiplying Numbers close to 100 without Multiplication Ticks
What is your usual reflex on reading numbers like this that have to be multiplied, assuming you know no calculation ticks for bank exams? You quickly start scribbling in some corner of a paper. You start by multiplying 3 with 8, then 3 with 9 followed by 9 with 8 and 9, add them and then get the answer. You follow the similar process for multiplying 104 and 112.
Smart Method of Multiplying Numbers using Multiplication Tricks
Multiplication tricks make these calculations really easy. We start with taking 100 as the base and the difference of the numbers from 100 or 1000 depending on the number.
98 – 100 = -2
93 – 100 = -7
Now you have to take the cross difference between the numbers and the differences, so here we will take ‘98-7’ or ‘93-2’ which is equal to ‘91’ and write it.
Now write 2 zeros after ‘91’ making it ‘9100’. The number of zeros written depends on the base, which is hundred in this case, therefore 2 zeros.
Find the product of the 2 numbers that indicate the difference from 100 and add it to 9100 in this case. Remember to take the signs into consideration while finding the product.
And this is the answer!! Simple and Quick!!
Now try multiplying the second set of numbers using multiplication tricks!
Wasn’t this really easy!
Use these multiplication tricks while multiplying these numbers –
Question 1: 97 x 89 = ?
1) 9833 2) 8733 3) 8633 4) 9733
Question 2: 96 x 109 = ?
1) 10436 2) 10536 3) 10464 4) 10364