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PSLE 2022 · Paper 2 · Q6 Statistics · Data: bar graph 3 marks: 1 + 1 + 1 · long answer (3 parts) difficulty 2 of 5

PSLE 2022 Paper 2, Question 6: Data: bar graph

The answer

(a) $\$240$ · (b) $\$48$ · (c) $\$300$

PSLE 2022 Paper 2 Question 6 · Verified worked solution by the Genius Plus Academy teaching team

What this question tests

This is Question 6 of the PSLE 2022 Paper 2 Mathematics paper. It tests data: bar graph, in the Statistics strand. It is worth 3 marks: 1 + 1 + 1. Open your copy of the paper at this question, then follow our full worked solution below.

Watch the walkthrough

Video: a Genius Plus Academy teacher solving PSLE 2022 Paper 2 Question 6

Teacher video · 2022 P2 Q6

Step-by-step solution

Bar graph with the monthly amounts 20, 100, 76, 44 read off and each interval marked as 4 dollars — Marked-up bar graph from the GPA worked solution (each small interval = $4).

(a) $20 + 0 + 100 + 76 + 44 = \$240$ (February has no bar, $0).

(b) $240 \div 5 = \$48$.

Answer: (a) $\$240$ · (b) $\$48$ · (c) $\$300$

Same structure, different costume

A question is hard because of its structure, not its story.

Change egg tarts to badges, a tank to two tanks, a ring of card to a folded sheet, and a child sees a brand new problem. The lock underneath is the same, and so is the key. Once a student can name the structure, a whole row of questions that look different start to open the same way.

It is also where marks really leak. Across fourteen years of papers, the marks lost in PSLE math leak at the reading far more than at the arithmetic, which is exactly why recognising the structure fixes them. We call this Lock and Key: name the lock, then the key follows.

See what the paper rewards → The hardest questions, shown working →

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