Find the Upper and Lower Bound of Data

The weight of a bag potatoes is 25 kg correct to the nearest kg. What are the upper and lower bounds for the weight of the bag?

• smallest 24.5kg largest 25.5kg

• smallest 23.6kg largest29.5kg

• smallest 24.5kg largest 25.5kg

• smallest 22.5kg largest 27.5kg

What is the upper bound and lower bound of 62 kg, measured to the nearest kg?

• Upper 63kg

  Lower 61kg

• Upper 62.5kg

  Lower 61.5kg

• Upper 60kg

  Lower 65kg

• Upper 62.95kg

  Lower 61.05kg

The sides of an equilateral triangle are 9.4 cm, correct to 1dp.

Work out the upper bound of the perimeter of this triangle.

• 28.05cm

• 28.35cm

• 28.2cm

• 28cm

The number 79 has been rounded to the nearest whole number. Find its lower and upper bounds

• 78.5  ≤ 79  <79.5

• 78 ≤ 79 <80

• 78.4 ≤ 79 <79.4

The number 10 has been rounded to the nearest whole number. Find its lower and upper bounds

• 9 ≤ 10 < 10

• 9.5  ≤ 10  < 10.5

• 9 ≤ 10 < 11

1. The length of a fence is 137 metres, correct to the nearest metre. Choose the upper and lower bound for the length of the fence.

• 136.5 m

• 141m

• 137.5m

• 132m

Zoe’s weight is 62 kg, correct to the nearest kilogram. Anu’s weight is 85 kg, correct to the nearest kilogram.

What is the lower bound of the difference between their weights?

• 20kg

• 23kg

• 22kg

• 24kg

Zoe’s weight is 62 kg, correct to the nearest kilogram. Anu’s weight is 85 kg, correct to the nearest kilogram.

Work out the upper bound for the difference between Zoe’s weight and Anu’s weight.

• 20 kg

• 23 kg

• 22 kg

• 24 kg

A rectangular field has a length of 9 m and a width of 11 m.

Length are measured to the nearest metre.

What is the greatest possible area of the field?

A cuboid measures 5 x 4 x 19 m measured to the nearest metre.

What is the least possible volume of the cuboid?