1. Bounds Bingo

2. Pick 8 from the list 155145percentagelower error bound 15.855.35348.55 15.7565.9305.45 65.786.54238 85.58.6594.5upper bound

3. 1234 5678 9101112 13141516 17181920

4. What does this calculate? Q1 Absolute error Actual value × 100

5. What is the upper bound? Q2 150 cm measured to the nearest 10 cm

6. What is the lower bound? Q3 150 cm measured to the nearest 10 cm

7. What is the upper bound? Q4 15.8 cm measured to the nearest mm

8. What is the lower bound? Q5 15.8 cm measured to the nearest mm

9. What is the upper bound? Q6 5.4 cm measured to one decimal place

10. What is the lower bound? Q7 5.4 cm measured to one decimal place

11. What is the upper bound? Q8 65.8 cm measured to 0.2

12. What is the lower bound? Q9 65.8 cm measured to 0.2

13. What is the upper bound of the perimeter? Q10 A square of side 10 cm to the nearest cm

14. What is the lower bound of the perimeter? Q11 A square of side 10 cm to the nearest cm

15. Is the answer an upper or lower bound? Q12 Upper bound ÷ lower bound

16. Is the answer an upper or lower bound? Q13 Lower bound ÷ upper bound

17. What is the upper bound of the perimeter? Q14 A rectangle of sides 10 cm and 6 cm to the nearest cm

18. What is the lower bound of the perimeter? Q15 A rectangle of sides 10 cm and 6 cm to the nearest cm

19. What is the upper bound of the track? Q16 A track is 86 metres long to the nearest metre

20. What is the lower bound of the track? Q17 A track is 86 metres long to the nearest metre

21. What is the maximum average speed of the runner? Q18 A track is 86 metres long to the nearest metre. A runner completes the distance in exactly 10 seconds.

22. What is the minimum average speed of the runner? Q19 A track is 86 metres long to the nearest metre. A runner completes the distance in exactly 10 seconds.

23. What is the upper bound for the weight? Q20 A bag weighs 94 kg to the nearest kg