Year 4 Measurement
Convert between metric units; calculate area and perimeter of rectangles; read analogue and digital clocks.
Try the worked examples below, then start an adaptive session that adjusts to your level.
Worked examples
A rectangle is 6 cm long and 4 cm wide. What is its PERIMETER?
- 20 cm
- 24 cm
- 10 cm
- 14 cm
Answer: 20 cm. Perimeter = 2(L + W) = 2(6 + 4) = 20 cm.
A film starts at 14:35 and lasts 1 hour 50 minutes. What time does it END?
- 16:25
- 15:25
- 16:05
- 13:25
Answer: 16:25. 14:35 + 1h = 15:35 + 50 min = 16:25 (15:35 + 25 min = 16:00, + 25 more = 16:25).
A pupil reads a clock showing 14:50 and writes '4:50 PM'. Find the mistake.
- After 12:00, subtract 12 to get the PM hour. 14 − 12 = 2, so 14:50 = 2:50 PM, not 4:50 PM.
- There is no mistake.
- Should be 14:50 PM.
- Should be 14:50 AM.
Answer: After 12:00, subtract 12 to get the PM hour. 14 − 12 = 2, so 14:50 = 2:50 PM, not 4:50 PM.. 14:50 = 2:50 PM.
Skills in this topic
Frequently asked questions
- What is covered in Year 4 Measurement?
- Convert between metric units; calculate area and perimeter of rectangles; read analogue and digital clocks. Key skills include Unit Conversion, Perimeter, Area.
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