11. John paid a total of £5.15 for a jar of coffee, a carton of milk and a bag of sugar. The jar of coffee cost £3.69 and the carton of milk cost 89p. How much did the bag of sugar cost?

END OF SECTION A. NOW GO BACK AND CHECK YOUR ANSWERS.

**END OF SECTION B.**

**NOW GO BACK AND CHECK YOUR ANSWERS**

5. Tilly decides to count using a clock.

She starts counting from 1 in the normal way, so:

1, 2, 3, 4......

But when she gets to 12, the count goes back to 1, so she counts:

...8, 9, 10, 11, 12, 1, 2, 3...

So, for example, using this method of counting, 4 + 9 = 1 and 10 + 5 = 3. Similarly, 3×5=3 and 2×13=2.

a. Using this counting method, complete the following:

i. 3 + 4 =
ii. 7 + 8 =

iii. 9 + 11 =

iv. 7 × 8 =

v. 9 × 11 =

b. Using this counting method, can you find two different positive numbers n and m such that n² = m²

c. Using this method, can you find two different numbers p and q such that p³ =q³?

**END OF SECTION C.**

**NOW GO BACK AND CHECK YOUR ANSWERS**

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