Lemmara logoLemmaraWorked solution

4MA1/2FR Jun 2018, Question 6: Rounding

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 4 marks

اقرأ هذا الحل مشروحاً بالعربي ←

The question, in short

Four short number questions: round 1782 to the nearest hundred, write a number in figures, explain an error in 2 + 5 × 7, and disprove a claim about primes plus even numbers.

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

Part (a) · 1 mark

Round 1782 to the nearest hundred.

  1. 11782 rounded to the nearest hundred is 1800

Answer1800

Part (b) · 1 mark

Write thirty two thousand and forty five using digits.

  1. 1Thirty two thousand and forty five is written as 32045

Answer32045

Part (c) · 1 mark

Explain why Billy's answer of 49 for 2 + 5 × 7 is wrong.

  1. 12 + 5 × 7 = 2 + 35 = 37
  2. 2Billy did not follow the order of operations
  3. 3He may have done 2 + 5 = 7 then 7 × 7 = 49
  4. 4Correct order: multiply first, then add

AnswerBilly should have done 5×7 and added 2 to the answer to this.

Part (d) · 1 mark

Give an example showing a prime plus an even number need not be odd.

  1. 1Prime number 2 added to even number 4
  2. 22 + 4 = 6
  3. 36 is even, not odd
  4. 4This shows Chen is not correct

Answer2 + 4 = 6

Stuck on a step? Read the free lesson: Rounding

Practise more rounding questions

Real 4MA1 past-paper questions, marked on your working like the exam, with a worked solution for every part.

Practise free on Lemmara

More past-paper questions on rounding

Also searched as: 4MA1 2FR June 2018 · 4MA1/2FR · 4ma1 jun18 2fr · question 6.
Lemmara is an independent study tool, not affiliated with or endorsed by Pearson Edexcel. The worked solutions are Lemmara’s own.