# Upper and Lower Bounds

### Description

GCSE Maths (Year 8 Number 2) Quiz on Upper and Lower Bounds, created by Ellen Billingham on 11/05/2013.
Quiz by Ellen Billingham, updated more than 1 year ago Created by Ellen Billingham over 10 years ago
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## Resource summary

### Question 1

Question
What is the lower bound of 32 if it has been rounded to the nearest unit?
• 31
• 31.5

### Question 2

Question
What is the upper bound of 32 if it has been rounded to the nearest unit?
• 32.49
• 32.5

### Question 3

Question
What are the bounds of 200 if it has been rounded to the nearest 10?
• LB = 195 UB = 204
• LB = 195 UB = 205

### Question 4

Question
What are the bounds for 20 to 1 s.f?
• LB = 15 UB = 25
• LB = 19.5 UB = 20.5

### Question 5

Question
What are the bounds of 20 to 2 s.f?
• LB = 15 UB = 25
• LB = 19.5 UB = 20.5

### Question 6

Question
A rectangle has sides given as 6cm by 15cm, to the nearest cm. Calculate the limits of accuracy of the perimeter and area of the rectangle.
• Perimeter - Min = 40 and Max = 44 Area - Min = 79.75 and Max = 100.75
• 40 ≤ Perimeter

### Question 7

Question
a = 7.2 to 1 d.p b = 4.5 to 1 d.p What are the largest and smallest possible values for a/b?
• LB = 1.57 UB = 1.63
• LB = 1.59 UB = 1.61

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