1
Seconds & minutes
60 seconds in a minute. 60 minutes in an hour.
1 min = 60 s · 1 h = 60 min
Time
📖 Study · Time (Grade 4)
Time (Grade 4)
Read 24-hour clocks, calculate elapsed time, convert units.
🎯 What you'll learn
- ✓Convert hours ↔ minutes
- ✓Use 24-hour time
- ✓Calculate journey times
2
24-hour clock
After 12 noon: 1 PM = 13:00, 2 PM = 14:00, midnight = 00:00.
3 PM = 15:00
3
Elapsed time
Train leaves 9:15, arrives 10:45. From 9:15 → 10:15 = 1 h. From 10:15 → 10:45 = 30 min. Total: 1 h 30 min.
9:15 → 10:45 = 1 h 30 min
4
Weeks & years
7 days = 1 week. 365 days = 1 year (366 in a leap year).
7 days · 365 days