Find the Upper and Lower Bound of Data

find the upper and lower bounds in each case 700(nearst100)

• 600≤700<800

• 650≤700<850

A piece of A4 paper is 21.1 cm by 29.7 cm measured to the nearest 0.1cm. What are the lower and upper bounds of its area, in square centimetres, correct to 1 dp?

• 624.1325 and 629.2125

• 624.1 and 629.2

• 624.13 and 629.21

• 624 and 629

If A = \frac{B}{C} what is the maximum and minimum value of A, if B is 100m correct to the nearest 5 m and C is 10 m correct to the nearest meter?

• 1.079

• 1.0799

• 1.08

• 1.0795

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

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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 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. (a) Write down the upper bound for the weight of Zoe. (b) Write down the lower bound for the weight of Anu.

• 61.5 kg

• 62.5 kg

• 84.5 kg

• 85.5 kg

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

The sides of an equilateral triangle are 9.4 cm, correct to the nearest millimetre.

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

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