Estimation

Mark scheme and answers · Total marks: 39

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Question 1 [1 mark]

52

Mark scheme
  • A [1] — cao 52

Accept algebraically equivalent correct forms.

Question 2 [1 mark]

36

Mark scheme
  • A [1] — cao 36

Accept algebraically equivalent correct forms.

Question 3 [1 mark]

50

Mark scheme
  • A [1] — cao 50

Accept algebraically equivalent correct forms.

Question 4 [1 mark]

20

Mark scheme
  • A [1] — cao 20

Accept algebraically equivalent correct forms.

Question 5 [1 mark]

100

Mark scheme
  • A [1] — cao 100

Accept algebraically equivalent correct forms.

Question 6 [1 mark]

27 cm³

Mark scheme
  • A [1] — cao 27 cm³

Accept algebraically equivalent correct forms.

Question 7 [1 mark]

40 cm²

Mark scheme
  • A [1] — cao 40 cm²

Accept algebraically equivalent correct forms.

Question 8 [1 mark]

£6000.00

Mark scheme
  • A [1] — cao £6000.00

Accept algebraically equivalent correct forms.

Question 9 [1 mark]

£350.00

Mark scheme
  • A [1] — cao £350.00

Accept algebraically equivalent correct forms.

Question 10 [1 mark]

6.5 miles per hour

Mark scheme
  • A [1] — cao 6.5 miles per hour

Accept algebraically equivalent correct forms.

Question 11 [1 mark]

400

Mark scheme
  • A [1] — cao 400

Accept algebraically equivalent correct forms.

Question 12 [1 mark]

£20.00

Mark scheme
  • A [1] — cao £20.00

Accept algebraically equivalent correct forms.

Question 13 [1 mark]

9

Mark scheme
  • A [1] — cao 9

Accept algebraically equivalent correct forms.

Question 14 [1 mark]

50

Mark scheme
  • A [1] — cao 50

Accept algebraically equivalent correct forms.

Question 15 [2 marks]

30

Mark scheme
  • A [2] — cao 30

Accept algebraically equivalent correct forms.

Question 16 [2 marks]

300

Mark scheme
  • A [2] — cao 300

Accept algebraically equivalent correct forms.

Question 17 [2 marks]

60

Mark scheme
  • A [2] — cao 60

Accept algebraically equivalent correct forms.

Question 18 [2 marks]

0.3 metres

Mark scheme
  • A [2] — cao 0.3 metres

Accept algebraically equivalent correct forms.

Question 19 [2 marks]

500

Mark scheme
  • A [2] — cao 500

Accept algebraically equivalent correct forms.

Question 20 [2 marks]

16 miles

Mark scheme
  • A [2] — cao 16 miles

Accept algebraically equivalent correct forms.

Question 21 [1 mark]

125

Mark scheme
  • A [1] — cao 125

Accept algebraically equivalent correct forms.

Question 22 [1 mark]

12.5

Mark scheme
  • A [1] — cao 12.5

Accept algebraically equivalent correct forms.

Question 23 [1 mark]

8

Mark scheme
  • A [1] — cao 8

Accept algebraically equivalent correct forms.

Question 24 [1 mark]

9.6

Mark scheme
  • A [1] — cao 9.6

Accept algebraically equivalent correct forms.

Question 25 [1 mark]

11

Mark scheme
  • A [1] — cao 11

Accept algebraically equivalent correct forms.

Question 26 [1 mark]

25

Mark scheme
  • A [1] — cao 25

Accept algebraically equivalent correct forms.

Question 27 [1 mark]

45 m³

Mark scheme
  • A [1] — cao 45 m³

Accept algebraically equivalent correct forms.

Question 28 [2 marks]

50700

Mark scheme
  • A [2] — cao 50700

Accept algebraically equivalent correct forms.

Question 29 [2 marks]

£25000.00

Mark scheme
  • A [2] — cao £25000.00

Accept algebraically equivalent correct forms.

Question 30 [2 marks]

22 cm

Mark scheme
  • A [2] — cao 22 cm

Accept algebraically equivalent correct forms.