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1. \(\)Hoeveel seconden passen er in 46 minuten? \(\)
2. \(\)Hoeveel minuten passen er in 86 uren? \(\)
3. \(\)Hoeveel seconden passen er in 48 minuten? \(\)
4. \(\)Hoeveel minuten passen er in 4860 seconden?\(\)
5. \(\)Hoeveel seconden passen er in 98 uren? \(\)
6. \(\)Hoeveel uren passen er in 90000 seconden?\(\)
7. \(\)Hoeveel seconden passen er in 75 uren? \(\)
8. \(\)Hoeveel minuten passen er in 4560 seconden?\(\)
9. \(\)Hoeveel uren passen er in 18000 seconden?\(\)
10. \(\)Hoeveel uren passen er in 5520 minuten?\(\)
11. \(\)Hoeveel minuten passen er in 4020 seconden?\(\)
12. \(\)Hoeveel minuten passen er in 2820 seconden?\(\)

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Verbetersleutel

1. \(46 \text{ minuten}\\=46\times60\text{ seconden}\\=2760\text{ seconden}\)
2. \(86 \text{ uren}\\=86\times60\text{ minuten}\\=5160\text{ minuten}\)
3. \(48 \text{ minuten}\\=48\times60\text{ seconden}\\=2880\text{ seconden}\)
4. \(4860 \text{ seconden}\\=4860:60\text{ minuten}\\=81\text{ minuten}\)
5. \(98 \text{ uren}\\=98\times3600\text{ seconden}\\=352800\text{ seconden}\)
6. \(90000 \text{ seconden}\\=90000:3600\text{ uren}\\=25\text{ uren}\)
7. \(75 \text{ uren}\\=75\times3600\text{ seconden}\\=270000\text{ seconden}\)
8. \(4560 \text{ seconden}\\=4560:60\text{ minuten}\\=76\text{ minuten}\)
9. \(18000 \text{ seconden}\\=18000:3600\text{ uren}\\=5\text{ uren}\)
10. \(5520 \text{ minuten}\\=5520:60\text{ uren}\\=92\text{ uren}\)
11. \(4020 \text{ seconden}\\=4020:60\text{ minuten}\\=67\text{ minuten}\)
12. \(2820 \text{ seconden}\\=2820:60\text{ minuten}\\=47\text{ minuten}\)