Find the Upper and Lower Bound of Data

The weight of a bag of concrete is 50kg, rounded to the nearest kg. What is the smallest possible weight of the bag of cement?

• 45

• 49

• 49.5

• 50

A pallet-load of car parts weighs 345kg, rounded to the nearest 5kg. What is the upper bound for the weight of the pallet?

• 350

• 347.5

• 345.5

• 340

The mass of the girl is 60 kg, and her estimate is correct to the nearest 10 kg. Between what limits does the actual mass girl lie?

• 50.5≤60<70.5

• 55≤60<65

• 50≤60<70

The number 43.4 has been rounded to the nearest tenth. Find its lower and upper bounds.

• 42 ≤ 43 < 44

• 43.3 ≤ 43.4 < 43.4

• 43.35  ≤ 43.4  < 43.45

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 length of a line is given as 8.32m, correct to the nearest cm. What is the least possible length of the line?

• 8.315m

• 8.32m

• 830cm

• 832cm

The length of a line is 53cm, correct to the nearest mm. What is the least possible length of the line?

• 52.45cm

• 52.5cm

• 52.9cm

• 52.95cm

Write down the upper bound for the length of AB & BC

• AB = 19.5

• AB = 15

• BC = 8.25

• BC= 8.35

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

A bag of flour has a mass of 1500 g (to the nearest 10 g). Find the maximum mass of 10 bags of flour.

• 15050 g

• 15000.5 g

• 15000 g

• 15050 kg