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1. \(\)Hoeveel uren passen er in 840 minuten?\(\)
2. \(\)Hoeveel uren passen er in 1260 minuten?\(\)
3. \(\)Hoeveel seconden passen er in 57 minuten? \(\)
4. \(\)Hoeveel minuten passen er in 4980 seconden?\(\)
5. \(\)Hoeveel seconden passen er in 39 minuten? \(\)
6. \(\)Hoeveel seconden passen er in 76 minuten? \(\)
7. \(\)Hoeveel minuten passen er in 27 uren? \(\)
8. \(\)Hoeveel minuten passen er in 66 uren? \(\)
9. \(\)Hoeveel minuten passen er in 4440 seconden?\(\)
10. \(\)Hoeveel seconden passen er in 30 uren? \(\)
11. \(\)Hoeveel uren passen er in 158400 seconden?\(\)
12. \(\)Hoeveel seconden passen er in 14 minuten? \(\)

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Verbetersleutel

1. \(840 \text{ minuten}\\=840:60\text{ uren}\\=14\text{ uren}\)
2. \(1260 \text{ minuten}\\=1260:60\text{ uren}\\=21\text{ uren}\)
3. \(57 \text{ minuten}\\=57\times60\text{ seconden}\\=3420\text{ seconden}\)
4. \(4980 \text{ seconden}\\=4980:60\text{ minuten}\\=83\text{ minuten}\)
5. \(39 \text{ minuten}\\=39\times60\text{ seconden}\\=2340\text{ seconden}\)
6. \(76 \text{ minuten}\\=76\times60\text{ seconden}\\=4560\text{ seconden}\)
7. \(27 \text{ uren}\\=27\times60\text{ minuten}\\=1620\text{ minuten}\)
8. \(66 \text{ uren}\\=66\times60\text{ minuten}\\=3960\text{ minuten}\)
9. \(4440 \text{ seconden}\\=4440:60\text{ minuten}\\=74\text{ minuten}\)
10. \(30 \text{ uren}\\=30\times3600\text{ seconden}\\=108000\text{ seconden}\)
11. \(158400 \text{ seconden}\\=158400:3600\text{ uren}\\=44\text{ uren}\)
12. \(14 \text{ minuten}\\=14\times60\text{ seconden}\\=840\text{ seconden}\)