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1. \(\)Hoeveel uren passen er in 61200 seconden?\(\)
2. \(\)Hoeveel seconden passen er in 24 minuten? \(\)
3. \(\)Hoeveel minuten passen er in 45 uren? \(\)
4. \(\)Hoeveel minuten passen er in 1680 seconden?\(\)
5. \(\)Hoeveel uren passen er in 4200 minuten?\(\)
6. \(\)Hoeveel minuten passen er in 3240 seconden?\(\)
7. \(\)Hoeveel minuten passen er in 48 uren? \(\)
8. \(\)Hoeveel uren passen er in 302400 seconden?\(\)
9. \(\)Hoeveel uren passen er in 5160 minuten?\(\)
10. \(\)Hoeveel minuten passen er in 1560 seconden?\(\)
11. \(\)Hoeveel uren passen er in 266400 seconden?\(\)
12. \(\)Hoeveel uren passen er in 244800 seconden?\(\)

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Verbetersleutel

1. \(61200 \text{ seconden}\\=61200:3600\text{ uren}\\=17\text{ uren}\)
2. \(24 \text{ minuten}\\=24\times60\text{ seconden}\\=1440\text{ seconden}\)
3. \(45 \text{ uren}\\=45\times60\text{ minuten}\\=2700\text{ minuten}\)
4. \(1680 \text{ seconden}\\=1680:60\text{ minuten}\\=28\text{ minuten}\)
5. \(4200 \text{ minuten}\\=4200:60\text{ uren}\\=70\text{ uren}\)
6. \(3240 \text{ seconden}\\=3240:60\text{ minuten}\\=54\text{ minuten}\)
7. \(48 \text{ uren}\\=48\times60\text{ minuten}\\=2880\text{ minuten}\)
8. \(302400 \text{ seconden}\\=302400:3600\text{ uren}\\=84\text{ uren}\)
9. \(5160 \text{ minuten}\\=5160:60\text{ uren}\\=86\text{ uren}\)
10. \(1560 \text{ seconden}\\=1560:60\text{ minuten}\\=26\text{ minuten}\)
11. \(266400 \text{ seconden}\\=266400:3600\text{ uren}\\=74\text{ uren}\)
12. \(244800 \text{ seconden}\\=244800:3600\text{ uren}\\=68\text{ uren}\)