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1. \(\)Hoeveel minuten passen er in 1500 seconden?\(\)
2. \(\)Hoeveel seconden passen er in 32 uren? \(\)
3. \(\)Hoeveel uren passen er in 216000 seconden?\(\)
4. \(\)Hoeveel seconden passen er in 25 uren? \(\)
5. \(\)Hoeveel uren passen er in 205200 seconden?\(\)
6. \(\)Hoeveel minuten passen er in 30 uren? \(\)
7. \(\)Hoeveel seconden passen er in 89 minuten? \(\)
8. \(\)Hoeveel seconden passen er in 18 minuten? \(\)
9. \(\)Hoeveel seconden passen er in 85 minuten? \(\)
10. \(\)Hoeveel uren passen er in 2040 minuten?\(\)
11. \(\)Hoeveel seconden passen er in 76 uren? \(\)
12. \(\)Hoeveel uren passen er in 54000 seconden?\(\)

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Verbetersleutel

1. \(1500 \text{ seconden}\\=1500:60\text{ minuten}\\=25\text{ minuten}\)
2. \(32 \text{ uren}\\=32\times3600\text{ seconden}\\=115200\text{ seconden}\)
3. \(216000 \text{ seconden}\\=216000:3600\text{ uren}\\=60\text{ uren}\)
4. \(25 \text{ uren}\\=25\times3600\text{ seconden}\\=90000\text{ seconden}\)
5. \(205200 \text{ seconden}\\=205200:3600\text{ uren}\\=57\text{ uren}\)
6. \(30 \text{ uren}\\=30\times60\text{ minuten}\\=1800\text{ minuten}\)
7. \(89 \text{ minuten}\\=89\times60\text{ seconden}\\=5340\text{ seconden}\)
8. \(18 \text{ minuten}\\=18\times60\text{ seconden}\\=1080\text{ seconden}\)
9. \(85 \text{ minuten}\\=85\times60\text{ seconden}\\=5100\text{ seconden}\)
10. \(2040 \text{ minuten}\\=2040:60\text{ uren}\\=34\text{ uren}\)
11. \(76 \text{ uren}\\=76\times3600\text{ seconden}\\=273600\text{ seconden}\)
12. \(54000 \text{ seconden}\\=54000:3600\text{ uren}\\=15\text{ uren}\)