Arithmetic with decimals

Mark scheme and answers · Total marks: 38

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Question 1 [1 mark]

6

Mark scheme
  • A [1] — cao 6

Accept algebraically equivalent correct forms.

Question 2 [1 mark]

4

Mark scheme
  • A [1] — cao 4

Accept algebraically equivalent correct forms.

Question 3 [1 mark]

48

Mark scheme
  • A [1] — cao 48

Accept algebraically equivalent correct forms.

Question 4 [1 mark]

1.5

Mark scheme
  • A [1] — cao 1.5

Accept algebraically equivalent correct forms.

Question 5 [1 mark]

3.2

Mark scheme
  • A [1] — cao 3.2

Accept algebraically equivalent correct forms.

Question 6 [1 mark]

12.05

Mark scheme
  • A [1] — cao 12.05

Accept algebraically equivalent correct forms.

Question 7 [1 mark]

7.7

Mark scheme
  • A [1] — cao 7.7

Accept algebraically equivalent correct forms.

Question 8 [1 mark]

5.7

Mark scheme
  • A [1] — cao 5.7

Accept algebraically equivalent correct forms.

Question 9 [1 mark]

22

Mark scheme
  • A [1] — cao 22

Accept algebraically equivalent correct forms.

Question 10 [1 mark]

3 kg

Mark scheme
  • A [1] — cao 3 kg

Accept algebraically equivalent correct forms.

Question 11 [1 mark]

0.00048

Mark scheme
  • A [1] — cao 0.00048

Accept algebraically equivalent correct forms.

Question 12 [1 mark]

25.2

Mark scheme
  • A [1] — cao 25.2

Accept algebraically equivalent correct forms.

Question 13 [1 mark]

2.1

Mark scheme
  • A [1] — cao 2.1

Accept algebraically equivalent correct forms.

Question 14 [1 mark]

18.01

Mark scheme
  • A [1] — cao 18.01

Accept algebraically equivalent correct forms.

Question 15 [1 mark]

11.74

Mark scheme
  • A [1] — cao 11.74

Accept algebraically equivalent correct forms.

Question 16 [1 mark]

3.4

Mark scheme
  • A [1] — cao 3.4

Accept algebraically equivalent correct forms.

Question 17 [1 mark]

5.85

Mark scheme
  • A [1] — cao 5.85

Accept algebraically equivalent correct forms.

Question 18 [1 mark]

5

Mark scheme
  • A [1] — cao 5

Accept algebraically equivalent correct forms.

Question 19 [1 mark]

5.15

Mark scheme
  • A [1] — cao 5.15

Accept algebraically equivalent correct forms.

Question 20 [2 marks]

£12.50

Mark scheme
  • A [2] — cao £12.50

Accept algebraically equivalent correct forms.

Question 21 [1 mark]

x = 2.6

Mark scheme
  • A [1] — cao x = 2.6

Accept algebraically equivalent correct forms.

Question 22 [1 mark]

0.729 cm³

Mark scheme
  • A [1] — cao 0.729 cm³

Accept algebraically equivalent correct forms.

Question 23 [1 mark]

£21.30

Mark scheme
  • A [1] — cao £21.30

Accept algebraically equivalent correct forms.

Question 24 [2 marks]

15.2

Mark scheme
  • A [2] — cao 15.2

Accept algebraically equivalent correct forms.

Question 25 [2 marks]

19.24

Mark scheme
  • A [2] — cao 19.24

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Question 26 [2 marks]

35.69

Mark scheme
  • A [2] — cao 35.69

Accept algebraically equivalent correct forms.

Question 27 [2 marks]

17.76

Mark scheme
  • A [2] — cao 17.76

Accept algebraically equivalent correct forms.

Question 28 [2 marks]

130

Mark scheme
  • A [2] — cao 130

Accept algebraically equivalent correct forms.

Question 29 [2 marks]

1.55 m

Mark scheme
  • A [2] — cao 1.55 m

Accept algebraically equivalent correct forms.

Question 30 [2 marks]

19.6375 cm²

Mark scheme
  • A [2] — cao 19.6375 cm²

Accept algebraically equivalent correct forms.