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

31

31.5

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

32.49

32.5

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

LB = 195 UB = 204

LB = 195 UB = 205

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

LB = 15 UB = 25

LB = 19.5 UB = 20.5

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

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

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