📏 Part 1: Choosing the Right Unit

For each object, circle the most appropriate unit of measurement.

Prefixes:   A. kilo-    B. centi-    C. milli-

A. kilo-: means 1000 times the base unit. Example: 1 kilogram (kg) = 1000 grams (g).

B. centi-: means 1/100 of the base unit. Example: 1 centimetre (cm) = 0.01 metres (m).

C. milli-: means 1/1000 of the base unit. Example: 1 millilitre (mL) = 0.001 litres (L).

Estimate: _____________    Actual measurement: _____________    Unit used: _____________

🔬 Part 2: Hands-On Measurement Recording

Use a ruler, scale, or measuring jug to measure each item. Record your estimate first, then the actual measurement with the correct unit.

Object: Width of your maths book
Estimate: _____________    Actual measurement: _____________    Unit used: _____________

Object: Mass of your pencil case
Estimate: _____________    Actual measurement: _____________    Unit used: _____________

Object: Water in a measuring jug
Estimate: _____________    Actual measurement: _____________    Unit used: _____________

🔄 Part 3: Converting Metric Units

Use multiplication or division by powers of 10 to convert between units. Show your working.

Reminder:   × 1000 to go from a larger unit to a smaller unit  |  ÷ 1000 to go from a smaller unit to a larger unit

a) 3.5 kg = _____________ g

b) 2500 mL = _____________ L

c) 450 cm = _____________ m

You have a jug containing 2 litres of juice. You want to know how many millilitres that is.

Step 1: Remember that 1 litre = 1000 millilitres.

Step 2: Calculate: 2 litres × 1000 = _____________ mL.

Step 3: Show your working here: