Repeating — Grade 7 Accelerated, what it means and where it is taught
Every fraction becomes a decimal that either stops or repeats forever.
Taught in Grade 7 Accelerated.
Where it is taught
What uses it later
This idea is needed for:
- Terminating decimal — One that stops, like 0.75, rather than repeating forever.
Practise this idea
2 questions in the course bank use Repeating, in Sampling, Simulation & Inference, Inverse Trigonometric Functions.
Problem 1
What does 95% confidence mean?
- Repeating the process, 95% of such intervals would capture the truth
- There is a 95% chance the truth is in this interval
- 95% of people agree
- The sample was 95% accurate
Worked answer
Repeating the process, 95% of such intervals would capture the truth
Confidence is a property of the procedure over many repetitions
Problem 2
What is the range of arcsin?
- -90° to 90°
- 0° to 180°
- 0° to 360°
- -180° to 0°
Worked answer
-90° to 90°
From -90° to 90° sine rises from -1 to 1 without repeating