1) Work out the upper bound and lower bound for 32 cm, measured to the nearest cm a) 31.5 and 32.5 b) 32.5 and 31.5 c) 35 and 30 d) 33 and 31 2) What is the lower bound of 62 kg, measured to the nearest kg? a) 62.5 b) 60 c) 61.5 d) 60.5 3) 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. a) 89500 b) 85000 c) 89950 d) 89999.5 4) The weight, w grams, of the bag of sweets is 250 g correct to the nearest 10 g. Find the lower bound of w. a) 247.5 b) 240 c) 249.5 d) 245 5) What is the upper bound of 62 kg, measured to the nearest kg? a) 65 b) 62.5 c) 61.5 d) 60

Upper and lower bounds

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