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4MA1/1F Jan 2022, Question 1: Understanding Decimal Place Value

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1F (Foundation) · Calculator · 4 marks

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The question, in short

Using a table of average annual rainfall in mm for five countries, answer four short questions about writing, rounding, comparing and calculating rainfall values.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Part (a) · 1 mark

Write the number 2051 in words.

  1. 1Write 2051 in words: two thousand and fifty one

AnswerTwo thousand and fifty one

Part (b) · 1 mark

Write 1668 rounded to the nearest hundred.

  1. 11668 rounded to the nearest hundred: look at the tens digit, which is 6
  2. 2Since 6 ≥ 5, round up
  3. 31600 becomes 1700

Answer1700

Part (c) · 1 mark

Find how much more rainfall Colombia has than Brazil, in mm.

  1. 1Rainfall for Colombia: 3240 mm
  2. 2Rainfall for Brazil: 1761 mm
  3. 3Difference: 3240 − 1761 = 1479

Answer1479

Part (d) · 1 mark

Find Nigeria's average annual rainfall, given it is 283 mm more than France's.

  1. 1Rainfall for France: 867 mm
  2. 2Nigeria has 283 mm more
  3. 3867 + 283 = 1150

Answer1150

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