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Add and Subtract Time Using the Calculator>
Add and Subtract Time Using the CalculatorAdd and Subtract Time Using the Calculator
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Question 1 of 2
1. Question
Add `11` hours `12` minutes to `3:15`pm Saturday.Hint
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The `° ‘ ‘ ‘` or DMS function on a scientific calculator can be used to add or subtract time.First, transform `3:15`pm to military time by adding `12` hours`3:15` `+12:00` `=` `15``:``15` Next, add `11` hours `12` minutes`15` hours `15` minutes `+11`hours `12` minutes `=` `15``°``15``°+11°12°` press the DMS button on the calculator for every `°` `=` `26°27’` Since the answer is greater than `24`, it means the time we are looking for occurs the day after which is SundaySimply subtract `24` hours to convert it to military time`26°27′24°` `=` `02°27’` `=` `0227` hours `=` `02:27`am `11` hours `12` minutes subtracted from `3:15`pm Saturday is `02:27`am Sunday.`02:27`am Sunday 
Question 2 of 2
2. Question
Subtract `20` hours `35` minutes from `5:20`pm Wednesday.Hint
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Fantastic!
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The `° ‘ ‘ ‘` or DMS function on a scientific calculator can be used to add or subtract time.First, transform `5:20`pm to military time by adding `12` hours`5:20` `+12:00` `=` `17``:``20` Next, subtract `20` hours `35` minutes`17` hours `20` minutes `20`hours `35` minutes `=` `17``°``20``°20°35°` press the DMS button on the calculator for every `°` `=` `3°15’` Since the answer is negative, it means the time we are looking for occurs the day before which is TuesdaySimply add `24` hours to convert it to military time`3°15’+24°` `=` `20°45’` `=` `2045` hours The time is in pm or in the afternoon since it is greater than `12`.Subtract `12` hours to get a proper time format`2045` hours `12` hours `=` `8:45`pm `20` hours `35` minutes subtracted from `5:20`pm Wednesday is `8:45`pm Tuesday.`8:45`pm Tuesday
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