Thursday, 19 February 2015

Some Short curt Tricks of Addition for SSC CGL/Bank PO/Clerk

Some Short curt Tricks for Addition

Addition of common difference in a series of numbers shortcut tricks :

Example 1:
49, 55, 61, 67  and 73
here we apply the shortcut tricks which help us to get the result quick
Answer :
Step 1: Add the smallest number to biggest number that is 49 + 73 = 122
Step 2: then multiply the sum 122 x 5 = 610
Step 3: At last divide the number by 2, 610 / 2 = 305
Thus 49 + 55 + 61 + 67 + 73 = 305.
Example 2:
36, 44, 52, 60 and 68
here we apply the shortcut tricks which help us to get the result quick
Answer :
Step 1: Add the smallest number to biggest number that is 36 + 68 = 104
Step 2: then multiply the sum 104 x 5 = 520
Step 3: At last divide the number by 2, 520 / 2 = 260
Example 3:
77, 82, 87, 92 and 97
here we apply the shortcut tricks which help us to get the result quick
Answer :
Step 1: Add the smallest number to biggest number that is 77 + 97 = 174
Step 2: then multiply the sum 174 x 5 = 870
Step 3: At last divide the number by 2, 870 / 2 = 435.
Example  4 :
77, 66, 55, 44 and 33
here we apply the shortcut tricks which help us to get the result quick
Answer :
Step 1: Add the smallest number to biggest number that is 77 + 33 = 110
Step 2: then multiply the sum 110 x 5 = 550
Step 3: At last divide the number by

Addition or sum all consecutive numbers starting from 

In Addition consecutive numbers shortcut tricks we learned how to find the sum of consecutive number in a group following each other continuously. that we simple way learned that problems using shortcut tricks.
Here let see 1, 2, 3, 4, 5, 6, 7, 8 and 9 what outcome result shown when we perform such group of addition but How  you go for finding their sum ? this type of  addition are looks easy  . But you see there is  to some common things happen in numbers, Like 1 added to last number that 9 getting 10 , after that second number when we added to last number, that is 8 also we get result 10. so adding both end we get the result as 10 there is four pair where we adding to get result 10,except 5
because no pair number 5 .so 4 x 10 = 40 and 40 + 5 = 45. this way we get Addition or sum of all consecutive numbers starting from 1.
Rule : Multiply the amount of number in the group by one more then their number, and divide by 2. Now here is another way to find Addition consecutive numbers starting from 1 using to 99 shortcut tricks.
Example : Addition or sum  all consecutive numbers starting from 1  to 99
here is 99 integers this series of numbers, one more than this is 100.
Answer: 
Step 1: at first multiply 99 x 100 = 9,900
Step 2: 9,900 / 2 = 4,950
The  sum of all consecutive numbers starting from 1 to 99 is 4,950

Addition consecutive numbers shortcut tricks

Rule of consecutive numbers shortcut tricks 
Rule: At first we add the smallest number of the given group of numbers to the large number, and then we perform a multiplication the result with amount of numbers in the given group of numbers at last divide the resultant product by 2.
here i give some example which u understand the rule of addition of consecutive shortcut tricks.
Example 1: Find the addition of consecutive  number from 23 to 29?
Ans:
Step 1: At first we add the smallest number to biggest number in the given group. Result is 23 + 29 =52.
Step 2: Then multiplication the result with amount of numbers in the given group of numbers 52 x 7 = 364.
Step 3: At we last divide the resultant product by 2, 364 / 2 = 182.
So the addition of  all numbers in group from 23 to 29 is 182.
Example 2: Find the addition of consecutive  number from 79 to 89?
Ans:
Step 1: At first we add the smallest number to biggest number in the given group. Result is 79 + 89 =168.
Step 2: Then multiplication the result with amount of numbers in the given group of numbers 168 x 11 = 1848.
Step 3: At we last divide the resultant product by 2, 1848 / 2 = 924.
So the addition of  all numbers in group from 79 to 89 is 924.
Example 3: Find the addition of consecutive  number from 56 to 69?
Ans:
Step 1: At first we add the smallest number to biggest number in the given group. Result is 56 + 69 =125.
Step 2: Then multiplication the result with amount of numbers in the given group of numbers 125 x 14 = 1750.
Step 3: At we last divide the resultant product by 2, 1750 / 2 = 875.
So the addition of  all numbers in group from 56 to 69 is 875.

Sum of all odd numbers starting from 1:

This is the sum of all odd number present in 1 to 100 series numbers, we know that in 1 to 100 series number have fifty even and fifty will be odd number so we can do only half odd numbers.

Rule : we just follow the rule like Square the amount of numbers in the series


Example :

find the sum of consecutive number in a group following 50 odd numbers in this group of 1 to 100
50 x 50 = 2,500

Answer :

So this is the sum of all odd numbers from 1 to 100 = 2,500

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