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- 1. Multiple Choice
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
- 2. Multiple Choice
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
- 3. Multiple Choice
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
- 4. Multiple Choice
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
- 5. Multiple Choice
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
- 6. Multiple Choice
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
- 7. Multiple Choice
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
- 8. Multiple Choice
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
- 9. Multiple Choice
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
- 10. Multiple Choice
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
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