Here is mathematical trick to multiply any number with 25. Shortcut tricks are very helpful for fast
calculations in competitive exams as time allotted
is too less for lengthy calculations. So shortcut tricks helps us to
solve questions is very less time hence improving chances of getting
good score and higher rank in merit.
Multiplying Any Number With 25
Follow steps below:
- First divide the number by 2.
- Again divide the result obtained by 2.
- Now multiply this number with 100.
- This is your answer
Follow examples below to understand it better:
Eg. 1:
84 * 25
Step -1 => 84 / 2 = 42
Step -2 => 42 / 2 = 21
Step -3 => 21 * 100 = 2100
Hence 84 * 25 = 2100. (Ans)
Eg. 2:
53 * 25
Step -1 => 53 / 2 = 26.5
Step -2 => 26.5 / 2 = 13.25
Step -3 => 13.25 * 100 = 1325
Hence 53 * 25 = 1325
Try it yourself:
- 42 * 25 =
- 104 *25 =
- 67 * 25 =
- 98 * 25 =
- 76 * 25 =
Mathematics is all about practice. Practice more and more problems of this type to improve your speed.
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