Error Intervals – Calculation – Answer Maze Students need to find route from START to FINISH. The answer to each question can be found in one of the boxes horizontally, vertically or diagonally from the question box. The worksheet is provided in a variety of sizes.

Printing To print handouts from slides - Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides - Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’ To print double-sided handouts - Highlight both slides before using ‘Print Selection’. Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

Answer Maze! Find a route from START to FINISH!

START! 40 23 1400 56.43 To the nearest 10cm, John is 150cm tall and Sally is 120cm tall. What is the greatest height difference between them? David is 132cm tall (3sf) Mark is 156cm tall (3sf) What is the smallest possible height difference between them? Anne measures a field to the nearest metre. The length is 45m and width is 32m. What is the largest possible area of the field? (2sf) A field is 535m2 to the nearest metre. The field’s width is 54m to the nearest metre. What is the minimum length of the field? (1dp) Annie is 149cm tall (3sf) Ash is 111cm tall (3sf) What is the greatest possible height difference between them? 30 1500 36.6 0.79 22.23 1 side of an isosceles triangle is twice the length of the others. Base = 4.80cm (2dp) What is the minimum perimeter? (2dp) The length of a garden is 8m to the nearest metre. The area is 34m2 to the nearest metre. What is the largest possible width of the garden? A runner finishes 100m in 10.56 seconds (2dp). A second runner finishes In 9.78 seconds (2dp). What is a maximum actual winning margin? 2 sides of an isosceles triangle are each twice the length of the base. Base = 3.60cm (2dp) What is the minimum perimeter? (2dp) A cuboid’s dimensions to the nearest cm: L = 5cm, W = 9cm H = 3cm What is the least volume the cuboid could be? (2sf) 4.7 4.6 14.6 11.6 17.98 John measures a square to the nearest metre. The length is 32m and width is 28m. What is the largest possible area of the field? (2sf) A cuboid’s dimensions to the nearest cm: L = 5cm, W = 4cm H = 7cm What is the least volume the cuboid could be? (3sf) A cube has a volume of 67cm3 to the nearest centimetre. What is the maximum area of one face? (2sf) A triangle’s lengths to one decimal place: 12.4cm, 14.3cm, 9.7cm What is the shape’s maximum perimeter? (1dp) A cube has a volume of 34cm3 to the nearest centimetre. What is the maximum area of one face? (2sf) 101 98 102 12.0 11 A runner finishes 200m in 34.4 seconds (1dp). A second runner finishes In 32.12 seconds (1dp). What is a maximum actual winning margin? A triangle’s lengths to one decimal place: 11.9cm, 12.5cm, 3.5cm What is the shape’s maximum perimeter? (1dp) A field is 273m2 to the nearest metre. The field’s width is 23m to the nearest metre. What is the minimum length of the field? (1dp) The length of a pool is 7m to the nearest metre. The area is 54m2 to the nearest metre. What is the largest possible width of the pool? FINISH!

START! 40 23 1400 56.43 To the nearest 10cm, John is 150cm tall and Sally is 120cm tall. What is the greatest height difference between them? David is 132cm tall (3sf) Mark is 156cm tall (3sf) What is the smallest possible height difference between them? Anne measures a field to the nearest metre. The length is 45m and width is 32m. What is the largest possible area of the field? (2sf) A field is 535m2 to the nearest metre. The field’s width is 54m to the nearest metre. What is the minimum length of the field? (1dp) Annie is 149cm tall (3sf) Ash is 111cm tall (3sf) What is the greatest possible height difference between them? 30 1500 36.6 0.79 22.23 1 side of an isosceles triangle is twice the length of the others. Base = 4.80cm (2dp) What is the minimum perimeter? (2dp) The length of a garden is 8m to the nearest metre. The area is 34m2 to the nearest metre. What is the largest possible width of the garden? A runner finishes 100m in 10.56 seconds (2dp). A second runner finishes In 9.78 seconds (2dp). What is a maximum actual winning margin? 2 sides of an isosceles triangle are each twice the length of the base. Base = 3.60cm (2dp) What is the minimum perimeter? (2dp) A cuboid’s dimensions to the nearest cm: L = 5cm, W = 9cm H = 3cm What is the least volume the cuboid could be? (2sf) 4.7 4.6 14.6 11.6 17.98 John measures a square to the nearest metre. The length is 32m and width is 28m. What is the largest possible area of the field? (2sf) A cuboid’s dimensions to the nearest cm: L = 5cm, W = 4cm H = 7cm What is the least volume the cuboid could be? (3sf) A cube has a volume of 67cm3 to the nearest centimetre. What is the maximum area of one face? (2sf) A triangle’s lengths to one decimal place: 12.4cm, 14.3cm, 9.7cm What is the shape’s maximum perimeter? (1dp) A cube has a volume of 34cm3 to the nearest centimetre. What is the maximum area of one face? (2sf) 101 98 102 12.0 11 A runner finishes 200m in 34.4 seconds (1dp). A second runner finishes In 32.12 seconds (1dp). What is a maximum actual winning margin? A triangle’s lengths to one decimal place: 11.9cm, 12.5cm, 3.5cm What is the shape’s maximum perimeter? (1dp) A field is 273m2 to the nearest metre. The field’s width is 23m to the nearest metre. What is the minimum length of the field? (1dp) The length of a pool is 7m to the nearest metre. The area is 54m2 to the nearest metre. What is the largest possible width of the pool? FINISH!

START! 40 23 1400 56.43 To the nearest 10cm, John is 150cm tall and Sally is 120cm tall. What is the greatest height difference between them? David is 132cm tall (3sf) Mark is 156cm tall (3sf) What is the smallest possible height difference between them? Anne measures a field to the nearest metre. The length is 45m and width is 32m. What is the largest possible area of the field? (2sf) A field is 535m2 to the nearest metre. The field’s width is 54m to the nearest metre. What is the minimum length of the field? (1dp) Annie is 149cm tall (3sf) Ash is 111cm tall (3sf) What is the greatest possible height difference between them? 30 1500 36.6 0.79 22.23 1 side of an isosceles triangle is twice the length of the others. Base = 4.80cm (2dp) What is the minimum perimeter? (2dp) The length of a garden is 8m to the nearest metre. The area is 34m2 to the nearest metre. What is the largest possible width of the garden? A runner finishes 100m in 10.56 seconds (2dp). A second runner finishes In 9.78 seconds (2dp). What is a maximum actual winning margin? 2 sides of an isosceles triangle are each twice the length of the base. Base = 3.60cm (2dp) What is the minimum perimeter? (2dp) A cuboid’s dimensions to the nearest cm: L = 5cm, W = 9cm H = 3cm What is the least volume the cuboid could be? (2sf) 4.7 4.6 14.6 11.6 17.98 John measures a square to the nearest metre. The length is 32m and width is 28m. What is the largest possible area of the field? (2sf) A cuboid’s dimensions to the nearest cm: L = 5cm, W = 4cm H = 7cm What is the least volume the cuboid could be? (3sf) A cube has a volume of 67cm3 to the nearest centimetre. What is the maximum area of one face? (2sf) A triangle’s lengths to one decimal place: 12.4cm, 14.3cm, 9.7cm What is the shape’s maximum perimeter? (1dp) A cube has a volume of 34cm3 to the nearest cm3. What is the maximum area of one face? (2sf) 101 98 102 12.0 11 A runner finishes 200m in 34.4 seconds (1dp). A second runner finishes In 32.12 seconds (1dp). What is a maximum actual winning margin? A triangle’s lengths to one decimal place: 11.9cm, 12.5cm, 3.5cm What is the shape’s maximum perimeter? (1dp) A field is 273m2 to the nearest metre. The field’s width is 23m to the nearest metre. What is the minimum length of the field? (1dp) The length of a pool is 7m to the nearest metre. The area is 54m2 to the nearest metre. What is the largest possible width of the pool? FINISH!

tom@goteachmaths.co.uk Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths.co.uk