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| 4.3 |
Basic Operations Involving Time |
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We will learn how to solve problems involving addition and substraction of time. There are various methods to solve them. The methods shown below are not restricted to specefic uses.
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| Addition of Time in Frractions and Decimals |
| Hours and Minutes |
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We have to convert it to equivalent fractions!
Convert the final answer to minutes.
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| Days and Hours |
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We can seperate whole numbers from its fractions.
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Convert to unit hours.
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| Years and Months |
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| Decades and Years |
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Improper fractions must be converted to proper fractions.
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Seperates decades and years to add the decades.
Convert decades to years. Then, add both of the years.
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| Centuries and Decades |
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Convert the fractions to centuries.
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Convert 0.37 centuries to decades.
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| Centuries and Years |
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Convert to needed unit.
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Convert 61.37 centuries to years.
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| Substraction of Time in Fractions and Decimals |
| Hours and Minutes |
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We need to have equivalent fractions to substract.
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We can convert to minutes first for easier operation.
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| Days and Hours |
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Equalise the denominator.
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| Years and Months |
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Convert the fractions to months.
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We can convert the decimals to months first.
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| Decades and Years |
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Convert to years.
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Convert 8.1 decades to decades and years.
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| Centuries and Decades |
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Convert to decades.
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| Centuries and Years |
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