Ellen Billingham
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GCSE Maths (Year 8 Number 2) Quiz on Upper and Lower Bounds, created by Ellen Billingham on 11/05/2013.

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Ellen Billingham
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Upper and Lower Bounds

Upper and Lower Bounds

Question 1 of 7

1

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

Select one of the following:

  • 31

  • 31.5

Explanation

Question 2 of 7

1

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

Select one of the following:

  • 32.49

  • 32.5

Explanation

Question 3 of 7

1

What are the bounds of 200 if it has been rounded to the nearest 10?

Select one of the following:

  • LB = 195
    UB = 204

  • LB = 195
    UB = 205

Explanation

Question 4 of 7

1

What are the bounds for 20 to 1 s.f?

Select one of the following:

  • LB = 15
    UB = 25

  • LB = 19.5
    UB = 20.5

Explanation

Question 5 of 7

1

What are the bounds of 20 to 2 s.f?

Select one of the following:

  • LB = 15
    UB = 25

  • LB = 19.5
    UB = 20.5

Explanation

Question 6 of 7

1

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.

Select one of the following:

  • Perimeter - Min = 40 and Max = 44
    Area - Min = 79.75 and Max = 100.75

  • 40 ≤ Perimeter

Explanation

Question 7 of 7

1

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?

Select one of the following:

  • LB = 1.57
    UB = 1.63

  • LB = 1.59
    UB = 1.61

Explanation

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