1 Evaluate the following:
(a) 6^{2}
(b) 0.5^{2}
(c) 1.5^{2}
Answer<
By the end of this unit you should be able to:
evaluate the squares, cubes and other powers of positive and negative numbers with or without your calculator;
estimate square roots and calculate them using your calculator;
describe the power notation for expressing numbers;
use your calculator to find powers of numbers;
multiply and divide powers of the same number;
understand and apply negative powers, t
1 Look at the diagram below and answer the following questions:
(a) Write down the coordinates of the points P, Q, R, S and T.
(b) On this diagram,
1 Write down the coordinates of A and B.
1 This table categorises Tom's activities for the day.
Activity  Time/hours Pie charts are representations that make it easy to compare proportions: in particular, they allow quick identification of very large proportions and very small proportions. They are generally based on large sets of data. The pie chart below summarises the average weekly expenditure by a sample of families on food and drink. The whole circle represents 100% of the expenditure. The circle is then divided into ‘segments’, and the area of each segment represents a fraction or pe 1 Consider the table about household sizes. Tables often give information in percentages. The table below indicates how the size of households in Great Britain changed over a period of nearly 30 years.

