Exam-style question
Try this first
Why would using a natural number alone be unsuitable for recording a measurement of 2.8 metres?.
- A.It would not represent the fractional part of the measurement
- B.Natural numbers are used only for negative measurements
- C.A measurement must always be recorded as a word
- D.Natural numbers cannot be used to count anything
Model answer
What a good answer should say
- It would not represent the fractional part of the measurement
Explanation
Why this works
The value 2.8 contains a fractional part. Real numbers are suitable for measurements because they can represent such values, whereas a natural number alone would not represent the value exactly.
Common mistake
No common mistake is linked to this question yet.