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Posted by: Deepak Upadhyay Posted date: 18:56 / comment : 0

Addition of Decimals (shortcuts)

 
 
    13.6 + 7.25
= (13 + 7) + (0.6 + 0.25) [ here we first add the rounded numbers together and then
                                           we add the decimal numbers]
= 20 + 0.85
= 20.85


Posted by: Deepak Upadhyay Posted date: 13:33 / comment : 0

  1. Adding by breaking down : This is a very simple but extremely helpful trick for the bank po, bank clerk or other competitive exams with which you can add the two or more numbers mentally in quick time without using a pen.
 Example-1             
                             37 + 46


Step-1 we add the place values of  tens digits of both the numbers(highlighted in red)
                    
                            30 + 40 = 70
Step-2 Now, we add the unit digits of both the numbers separately(highlighted in blue)

                             7 + 6 = 13

Step - 3 Finally, we add the values we get at steps 1 and 2 together.

                            70 + 13 = 83

Calculation

Posted by: Deepak Upadhyay Posted date: 13:31 / comment : 0

Cubes up to 20

Posted by: Deepak Upadhyay Posted date: 12:18 / comment : 0

13
1
23
8
33
27
43
64
53
125
63
216
73
343
83
512
93
729
103
1000
113
1331
123
1728
133
2197
143
2744
153
3375
163
4096
173
4913
183
5832
193
6859
203
8000


Squares up to 30

Posted by: Deepak Upadhyay Posted date: 11:41 / comment : 0

Squares up to 30 

 
12
1
22
4
32
9
42
16
52
25
62
36
72
49
82
64
92
81
102
100
112
121
122
144
132
169
142
196
152
225
162
256
172
289
182
324
192
361
202
400
212
441
222
484
232
529
242
576
252
625
262
676
272
729
282
784
292
841
302
900


Posted by: Deepak Upadhyay Posted date: 20:29 / comment : 0

MS Word-Test

Posted by: Deepak Upadhyay Posted date: 20:20 / comment : 0

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