Questions	Your answer	Correct answer	Marking
What is 1 - 1 ?	0	0	✓
What is 10 - 1 ?	9	9	✓
What is 2 - 10 ?	-8	-8	✓
What is 5 - 5 ?	0	0	✓
What is 2 - 4 ?	-2	-2	✓
What is 4 - 7 ?	-3	-3	✓
What is 9 - 3 ?	6	6	✓
What is 4 - 5 ?	-1	-1	✓
What is 5 - 7 ?	-2	-2	✓
What is 2 - 6 ?	-4	-4	✓
What is 8 - 8 ?	0	0	✓
What is 8 - 7 ?	1	1	✓
What is 10 - 1 ?	9	9	✓
What is 2 - 3 ?	-1	-1	✓
What is 8 - 8 ?	0	0	✓
What is 9 - 1 ?	8	8	✓
What is 8 - 5 ?	3	3	✓
What is 10 - 6 ?	4	4	✓
What is 3 - 8 ?	-5	-5	✓
What is 3 - 6 ?	-3	-3	✓

Your final score is 20/20. Time taken 166 minutes, 39.00 seconds.