How to Add and Subtract Mixed Time Units
To add or subtract mixed time units, line up hours with hours and minutes with minutes, then regroup using 60 minutes = 1 hour (and 60 seconds = 1 minute). For example, 2 h 45 min + 1 h 30 min = 3 h 75 min = 4 h 15 min. To subtract 1 h […]
How to Find Fractions of Time Units
To find a fraction of a time unit, multiply the fraction by the number of smaller units it contains. For example, 1/4 of an hour is 1/4 × 60 = 15 minutes, 2/3 of a minute is 40 seconds, and 3/4 of a day is 18 hours. Finding fractions of time units is often used […]
