Find the Upper and Lower Bound of Data

Work out the upper bound and lower bound for 32 cm, measured to the nearest cm

• 32.5 and 31.5

• 31.5 and 32.5

• 35 and 30

• 33 and 31

What is the upper bound and lower bound of 390 grams, measured to the nearest 10 grams?

• 385 and 395

• 390.5 and 389.5

• 400 and 380

• 395 and 385

The length and width of a field have been measured as 78m and 35m to the nearest metre. Find the greatest possible amount of fencing needed to surround the field

• 27

• 228

• 226.5

• 228.5

a = 60 rounded to the nearest 10b = 5.7 rounded to one decimal place.What are the lower and upper bounds of a/b

• 10.55 and 10.45

• 11.5 and 9.57

• 10.35 and 10.71

• 10.77 and 9.91

The distance travelled by an object is 18 metres in a time of 1.8 seconds. Both measurements have been given correct to 2 significant figures. Calculate the minimum and maximum possible speed of the object in m/s.

• 9.75 and 10.35

• 9.5 and 10.5

• 9.46 and 10.57

• 10 and 9

A sheet of paper is 0.08mm thick correct to 2 decimal places. Calculate the difference between the least and greatest possible heights if 2000 pieces of paper are stacked on top of each other

• 200

• 20

• 2000

• 160

The mass of a block of wood is 480g rounded to the nearest 10g. The volume of the block is 1000 cm3 rounded to 1 significant figure. Calculate the difference between the least and greatest possible density of the block. ( Density = Volume / mass )

• 2.13

• 2.08

• 2.10

• 2.15

To the nearest thousand, 90 000 cars drive through the road toll in one week.Write down the lower bound for this number of cars.

• 85000

• 89950

• 89500

• 89999.5

The weight, w grams, of the bag of sweets is 250 g correct to the nearest 10 g. Find the lower bound and the upper bound of w

• 245 and 255

• 249.5 and 250.5

• 247.5 and 252.5

• 240 and 260

An equilateral triangle has sides of length 6.2 cm, correct to the nearest millimetre. Find the lower bound and t the statement about the perimeter, P cm, of the triangle.

• 24.6 and 25

• 24.75 and 24.85

• 24.55 and 24.65

• 24.95 and 25.5