GCSE Mathematics (9-1)

24.2 Tables, bar charts, pie charts and pictograms — Practise with help

Warm-up: remember

Closed book: Find 1248\frac{12}{48} in its simplest form, then work out 14\frac14 of 360∘360^\circ.

Check your answers

1248=14\frac{12}{48}=\frac14, and 14\frac14 of 360∘360^\circ is 90∘90^\circ. If either answer differs, revisit equivalent fractions and fractions of amounts before continuing.

Question 1

A class records 8 apples, 5 bananas and 7 pears. Which chart compares the counts of separate categories?

Hint

The categories are separate, so you need a chart with one bar for each fruit.

Next step

Name the chart that uses separate bars with gaps between them.

Full working

A bar chart. Each fruit gets its own bar, and the gaps show the categories are separate.

Question 2

Find the pie-chart angle for 12 out of 48 responses.

Hint

A full pie chart is 360∘360^\circ, so find the fraction of the whole first.

Next step

1248=14\frac{12}{48}=\frac14, so find 14×360∘\frac14\times360^\circ.

Full working

1248×360∘=14×360∘=90∘\frac{12}{48}\times360^\circ=\frac14\times360^\circ=90^\circ.

Question 3

A pictogram symbol represents 4 votes. How many votes do 3 symbols show?

Hint

Each whole symbol stands for the same number of votes.

Next step

Multiply the number of symbols by the value of one symbol: 3×43\times4.

Full working

3×4=123\times4=12 votes.

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