Calculate the upper and lower bounds for each of the following questions:Name: Date:

**Question 1:**135m rounded to the nearest 5m

**Question 2:**50mm rounded to the nearest 10mm.

**Question 3:**4.11km rounded to 2 decimal places.

**Question 4:**972ml rounded to the nearest whole number.

**Question 5:**470,000g rounded to 2 significant figures.

**Question 6:**3.20kg rounded to 2 decimal places.

**Question 7:**59km/h rounded to the nearest whole number.

**Question 8:**7.0L rounded to 2 significant figures.

**Question 9:**43,000ml rounded to 2 significant figures.

**Question 10:**660kg correct to 2 significant figures.

**Question 11:**200g rounded to the nearest 100g.

**Question 12:**150cl rounded to the nearest 5cl

**Question 13:**2.34cl correct to 3 significant figures.

**Question 14:**9,000m

^{2}correct to 1 significant figure.

**Question 15:**55.4cm rounded to 1 decimal place.

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# Answers

**Question 1:**lower bound = 132.5m, upper bound = 137.5m

**Question 2:**lower bound = 45mm, upper bound = 55mm

**Question 3:**lower bound = 4.105km, upper bound = 4.115km

**Question 4:**lower bound = 971.5ml, upper bound = 972.5ml

**Question 5:**lower bound = 465,000g, upper bound = 475,000g

**Question 6:**lower bound = 3.195kg, upper bound = 3.205kg

**Question 7:**lower bound = 58.5km/h, upper bound = 59.5km/h

**Question 8:**lower bound = 6.95L, upper bound = 7.05L

**Question 9:**lower bound = 42,500ml, upper bound = 43,500ml

**Question 10:**lower bound = 655kg, upper bound = 665kg

**Question 11:**lower bound = 150g, upper bound = 250g

**Question 12:**lower bound = 147.5cl, upper bound = 152.5cl

**Question 13:**lower bound = 2.335cl, upper bound = 2.345cl

**Question 14:**lower bound = 8,500m

^{2}, upper bound = 9,500m

^{2}

**Question 15:**lower bound = 55.35cm, upper bound = 55.45cm

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