MA07-03 Maths Coming soon
Upper and lower bounds of a rounded value
MA07-03
This lesson is coming soon.
In this lesson
Find the upper and lower bound of a single value given rounded to a stated degree of accuracy, and give the different bounds required when a value has been truncated instead.
What it covers
- Finding the upper and lower bound of a single value rounded to a stated degree of accuracy (half the place value above and below)
- Distinguishing rounding-based bounds from truncation-based bounds
Key words
For: Cambridge IGCSE 0580, Edexcel IGCSE 4MA1, OCR GCSE J560
On the specification
| Board | Spec | Statement |
|---|---|---|
| Cambridge IGCSE 0580 | C1.10 | Give upper and lower bounds for data rounded to a specified accuracy. |
| Cambridge IGCSE 0580 | E1.10 | Give upper and lower bounds for data rounded to a specified accuracy. |
| Edexcel IGCSE 4MA1 | F1.8C | Identify upper and lower bounds where values are given to a degree of accuracy |
| OCR GCSE J560 | 4.01c | Use inequality notation to write down an error interval for a number or measurement rounded or truncated to a given degree of accuracy. Apply and interpret limits of accuracy. |
For teachers
This GCSE Maths lesson teaches upper and lower bounds of a rounded value. By the end, students should be able to find the upper and lower bound of a single value given rounded to a stated degree of accuracy, and give the different bounds required when a value has been truncated instead. It works through two worked examples and the mistakes examiners report.