Solve problems involving duration, including using 12hour and 24hour time within a single time zone (ACMMG199)
Outcomes

Add and subtract time mentally using bridging strategies, eg from 2:45 to 3:00 is 15 minutes and from 3:00 to 5:00 is 2 hours, so the time from 2:45 until 5:00 is 15 minutes + 2 hours = 2 hours 15 minutes
Examples

Solve a variety of problems involving duration, including where times are expressed in 12hour and 24hour notation, that require the use of mixed units (years, months, days, hours and/or minutes)
Examples