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Mass

Grams and kilograms, converting, and reading scales correctly. Read one part at a time and tap “I know this”. Then test yourself in the quiz.

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Mass

UnitExampleConvert
ga pencil, a spoon of sugar1 000 g = 1 kg
kga bag of potatoes, a person1 000 kg = 1 t
  • 2 kg = 2 000 g; 1 500 g = 1 kg 500 g = 1½ kg; ½ kg = 500 g.
Tap when you could tell someone without looking.

Reading scales

  1. Look at two numbered marks and work out what each small mark is worth.
  2. Read where the pointer or needle stands.
  3. On a balance scale both sides are equally heavy when the beam is level.
Tap when you could tell someone without looking.

Scales and converting

  • A bathroom scale weighs people; a kitchen scale weighs food; a balance scale compares two masses.
  • 1 kg = 1 000 g; ½ kg = 500 g; ¼ kg = 250 g; 2¾ kg = 2 750 g.
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Remember this and test yourself

Remember this: your summary
  • 1 000 g = 1 kg.
  • kg to g: × 1 000; g to kg: ÷ 1 000.
  • Find the value of one mark on the scale.
  • A balance scale is level when the sides are equal.

Write these points in your book. Read them again the night before the test.

Memory trick

Kilo = thousand: kilogram, kilometre, kilolitre.

Flash cards · Tap to turn over

Important words

First say the answer yourself, then turn the card over.

Now the real quiz!

The quiz has many more questions on this topic. Every question shows straight away whether you are right and explains why.

Take the quiz: Mass
Practise it step by step: Extra Maths ClassAll Grade 5 Maths summaries
For parents
  • Let your child work the examples on paper and explain them to you.
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Follows CAPS for Grade 5 Mathematics. Always check your teacher’s notes and textbook too.

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