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Decimal Detective Powers Task
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Decimal Detective Powers Task
🔍 Part 1: Decimal Place Value Investigation
1. Look at the decimal 47.356. What digit is in the tenths place?
4
7
3
5
2. Which decimal is equivalent to 3/10?
0.03
0.3
3.0
0.30
3. A bottle of milk costs $2.85. What is this amount in cents?
28.5 cents
285 cents
2850 cents
28 cents
4. Round 6.749 to the nearest tenth:
Answer: ___________
5. Write these decimals in order from smallest to largest:
0.8, 0.08, 0.88, 0.808
🧮 Part 2: Decimal Operations Detective Work
6. Calculate: 4.7 + 2.85 = ___________
7. A runner completed a race in 12.67 seconds. Another runner finished in 11.9 seconds. What is the difference between their times?
8. Sarah bought 2.5 kg of apples at $3.20 per kilogram. How much did she pay in total?
9. Convert these measurements:
a) 1.2 metres = __________ centimetres
b) 750 grams = __________ kilograms
c) 2.5 kilometres = __________ metres
🎯 Part 3: Real-World Decimal Mysteries
10. The temperature in Auckland was 18.7°C in the morning and rose by 4.8°C by afternoon. What was the afternoon temperature?
11. Detective Challenge: A shop receipt shows three items costing $4.50, $7.25, and $2.80. If the customer paid with a $20 note, how much change should they receive?
12. Explain in your own words why 0.5 and 0.50 represent the same value, even though they look different.
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