📏 Part 1: Measurement Tools and Estimation

For each question, choose the best answer or fill in the blank.

1. Which tool would you use to measure the mass of a bag of apples?

Ruler

Kitchen scales

Measuring jug

Thermometer

2. A student wants to measure how much water fits in a drink bottle. Which tool and unit should they use?

Ruler — centimetres (cm)

Measuring jug — millilitres (mL)

Thermometer — degrees Celsius (°C)

Stopwatch — seconds

3. Tick all the units that could be used to measure length.

Millimetres (mm)

Kilograms (kg)

Centimetres (cm)

Metres (m)

Litres (L)

4. Hamish estimates the length of his pencil. He says it is "about 15 cm." When he measures it, it is 14.8 cm. Is his estimate reasonable? Circle your answer and explain why.

Yes, it is a reasonable estimate

No, it is not a reasonable estimate

Because: _____________________________________________________________

5. Match each measurement task to the most appropriate tool.

Measuring room temperature

Timing a 100 m sprint

Weighing flour for a recipe

Measuring the length of a desk

Tape measure

Kitchen scales

Thermometer

Stopwatch

🔄 Part 2: Metric Unit Conversions

Convert the following measurements. Show your working in the box provided.

6. Convert these measurements from grams to kilograms.

a) 500 g = _________ kg

b) 2 750 g = _________ kg

c) 85 g = _________ kg

7. Convert these measurements from millilitres to litres.

a) 1 000 mL = _________ L

b) 350 mL = _________ L

c) 4 500 mL = _________ L

8. Convert these measurements from centimetres to metres.

a) 100 cm = _________ m

b) 250 cm = _________ m

c) 75 cm = _________ m

9. A recipe uses 90 seconds of mixing time. How many minutes and seconds is that?

90 seconds = _________ minute(s) and _________ seconds

10. A bag of potatoes weighs 2.5 kg. How many grams is that? Show your working.

2.5 kg = _________ g

✏️ Part 3: Real-World Measurement Thinking

11. Aroha measures the temperature of water from the tap. The thermometer reads 18°C. She then boils the water and it reads 100°C. How many degrees did the temperature increase?

Temperature increase = _________ °C

12. A student says: "I would measure the distance from Auckland to Wellington in centimetres." Do you agree? Explain which unit would be better and why.