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4MA1/1F Jan 2020, Question 3: Unit Conversions

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1F (Foundation) · Calculator · 6 marks

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The question, in short

Choose sensible metric units for three given measurements, then work out how many 30 millilitre drinks can be made from a 1 litre bottle of juice.

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

Part (ai) · 1 mark

Give a sensible metric unit for the distance from Cairo to Nairobi, 5211.

  1. 1The distance between two cities is a long distance, so a large unit of length is needed.
  2. 25211 millimetres is about 5 m and 5211 metres is only about 5 km, both far too short.
  3. 3The distance from Cairo to Nairobi is 5211 kilometres.

Answerkilometres

Part (aii) · 1 mark

Give a sensible metric unit for the weight of an egg, 20.

  1. 1The weight of an egg is small, so a small unit of mass is needed.
  2. 220 kilograms is the weight of a small child and 20 milligrams is no more than a speck, so neither fits.
  3. 3The weight of an egg is 20 grams.

Answergrams

Part (aiii) · 1 mark

Give a sensible metric unit for the area of a classroom floor, 260.

  1. 1Area is measured in square units.
  2. 2A classroom floor is several metres long and several metres wide, so the unit must be square metres.
  3. 3The area of the floor of a classroom is 260 square metres.

Answersquare metres

Part (b) · 3 marks

Find how many drinks Cara makes, using 30 millilitres of juice per drink from 1 litre.

  1. 11 litre = 1000 millilitres
  2. 2Each drink uses 30 millilitres, so the number of drinks = 1000 ÷ 30
  3. 31000 ÷ 30 = 33.33...
  4. 4Only whole drinks can be made, so Cara makes 33 drinks.

Answer33

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