1. Upper and Lower Bounds 2 - Calculations www.waldomaths.com Copyright © Waldomaths.com 2010, all rights reserved

2. Two ropes, A and B, have lengths: A = 36m to the nearest metre B = 23m to the nearest metre.

3. 1 What are the upper and lower bounds for A + B? Addition

4. 2 What are the upper and lower bounds for A - B? Subtraction

5. h = 6.4cm (nearest mm) w = 11.7cm (nearest mm) Area = wh = ? Multiplication What are the upper and lower bounds of the area of the rectangle?

6. Division h = 4cm (nearest cm) w = 7cm (nearest cm) x What are the upper and lower bounds of the angle x ?

7. Summary

8. A Waldomaths clip this, along with other videos and more than 100 applets, all on mathematical themes, can be found on the free website www.waldomaths.com Copyright © Waldomaths.com 2010, all rights reserved visit Waldomaths today