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1. \(\)Hoeveel uren passen er in 240 minuten?\(\)
2. \(\)Hoeveel minuten passen er in 4320 seconden?\(\)
3. \(\)Hoeveel minuten passen er in 1740 seconden?\(\)
4. \(\)Hoeveel uren passen er in 360000 seconden?\(\)
5. \(\)Hoeveel minuten passen er in 3480 seconden?\(\)
6. \(\)Hoeveel seconden passen er in 71 uren? \(\)
7. \(\)Hoeveel uren passen er in 72000 seconden?\(\)
8. \(\)Hoeveel minuten passen er in 65 uren? \(\)
9. \(\)Hoeveel minuten passen er in 2820 seconden?\(\)
10. \(\)Hoeveel minuten passen er in 3180 seconden?\(\)
11. \(\)Hoeveel seconden passen er in 42 minuten? \(\)
12. \(\)Hoeveel seconden passen er in 62 minuten? \(\)

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Verbetersleutel

1. \(240 \text{ minuten}\\=240:60\text{ uren}\\=4\text{ uren}\)
2. \(4320 \text{ seconden}\\=4320:60\text{ minuten}\\=72\text{ minuten}\)
3. \(1740 \text{ seconden}\\=1740:60\text{ minuten}\\=29\text{ minuten}\)
4. \(360000 \text{ seconden}\\=360000:3600\text{ uren}\\=100\text{ uren}\)
5. \(3480 \text{ seconden}\\=3480:60\text{ minuten}\\=58\text{ minuten}\)
6. \(71 \text{ uren}\\=71\times3600\text{ seconden}\\=255600\text{ seconden}\)
7. \(72000 \text{ seconden}\\=72000:3600\text{ uren}\\=20\text{ uren}\)
8. \(65 \text{ uren}\\=65\times60\text{ minuten}\\=3900\text{ minuten}\)
9. \(2820 \text{ seconden}\\=2820:60\text{ minuten}\\=47\text{ minuten}\)
10. \(3180 \text{ seconden}\\=3180:60\text{ minuten}\\=53\text{ minuten}\)
11. \(42 \text{ minuten}\\=42\times60\text{ seconden}\\=2520\text{ seconden}\)
12. \(62 \text{ minuten}\\=62\times60\text{ seconden}\\=3720\text{ seconden}\)