# CLASS-5SUBTRACTION OF TIME

SUBTRACTION OF TIME

There are some subtraction method of time which are given below for better understand, usually for this kind of subtraction normal subtraction method is follows but there are some exception also-

Example.1) Subtract 3 hours 35 minutes 27 seconds from  8 hours 52 minutes 43 seconds

Ans.)                8 hours   52 minutes   43 seconds

_   3 hours   35 minutes   27 seconds

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5 hours   17 minutes   16  seconds   (In this case subtract hours, minutes, and seconds separately)                                                                                                                                                                           (Ans.)

Example.2) Subtract 4 hours 55 minutes 43 seconds from 6 hours 42 minutes 35 seconds

Ans.)          6 hours   42 minutes   35 seconds

_    4 hours   55 minutes   43 seconds

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( Here you can observe 35 & 42 is less than 43 & 55 respectively, so 6 hours 42 minutes 35 seconds = 5 hours 101 minutes 95 seconds,  re-group hours, minutes & seconds, 6 hours = 5 hours 60 minutes and 42 minutes = 41 minutes 60 seconds. Now add 60 minutes and 60 seconds to the seconds and minute column. So, now we have - 6 hours 42 minutes 35 seconds = 5 hours 101 minutes 95 seconds.

So, now subtract 4 hours  55 minutes 43 seconds from the new form of transform time.

5 hours  101 minutes 95 seconds

_     4 hours  55 minutes  43 seconds

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1 hour  46 minutes  52  seconds      ( In this case subtract hours, minutes, and seconds separately )

(Ans.)

Example.3) Subtract 3 hours 58 minutes from 6 hours 42 minutes.

Ans.)     6  hours  42 minutes

_    3  hours  58 minutes

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( here we can observe 42 is less than 58, regroup hours and minutes. 6 hours = 5 hours 60 minutes, now add 60 minutes to the minutes column , so, we have  6 hours 42 minutes = 5 hours 102 minutes now subtract from obtained new time format

5 hours  102 minutes

_     3 hours   58 minutes

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2 hours   44  minutes  (In this case subtract hours and minutes separately)

(Ans.)