PEAZIT Aha card
Go straight to resources ↓An hour does not contain a hundred minutes
An hour contains 60 minutes, and a minute contains 60 seconds. A decimal fraction of an hour is that fraction of 60 minutes.
| Time | Calculation | Same duration |
|---|---|---|
| 1 h | 1 × 60 | 60 min |
| 0.5 h | 0.5 × 60 | 30 min |
| 1.5 h | 1.5 × 60 | 90 min |
One worked example
- 2 h 15 minSeparate whole hours and minutes.
- 2 × 60 + 15Each hour contributes 60 minutes.
- 135 minEverything now uses one unit.
Watch out: The duration 1:30 means 1 h 30 min, or 1.5 h, not 1.30 h.
Goal, prerequisites and card origin
What you will learn: Convert hours and minutes without confusing decimal notation.
What you need first: Multiplication, division and decimals.
An original PEAZIT working card. Independent expert review and effectiveness testing have not yet taken place. · v1
Show connections
An hour contains 60 minutes, and a minute contains 60 seconds. A decimal fraction of an hour is that fraction of 60 minutes.