Comparing and estimating mass and volume | Maths | Quizalize & Oak National Academy

Starter quiz

Which of these would you use grams to measure?
- The length of a bus.
- The volume of liquid in a cup.
- The mass of an egg. ✓
Look at these objects. Which has the greater mass?
- The feather has the greater mass.
- The car has the greater mass. ✓
- The mass of the feather and car are the same.
A glass holds 250 ml of water. Compare this volume to a volume of one litre. Which statement is true?
- 250 ml is less than one litre. ✓
- 250 ml is more than one litre.
- 250 ml and 1 L are the same volume.
What is the mass of this teddy bear?
- '150 g' ✓
What volume of water is in this jug?
- 40 ml
- 80 ml ✓
- 90 ml
Starting with the smallest, put these containers in order of their capacity.
- 1
  
  ⇔
  
  C
- 2
  
  ⇔
  
  A
- 3
  
  ⇔
  
  B

Look at these two bags. They are the same size. Will they have the same mass?
- Yes
- No
- The could have, but we cannot be certain. ✓
Look at these bags. Which has the greater mass?
- The green bag has the greater mass.
- The orange bag has the greater mass.
- I cannot be certain. ✓
Look at these containers. Which has the greatest capacity?
- A
- B
- I cannot be certain. ✓
Andeep holds a pebble and compares its mass to the mass of a 50 g egg that he is holding. The pebble feels lighter than the egg. Which statement is true?
- The pebble's mass must be greater than 50 g.
- The pebble's mass must be smaller than 50 g. ✓
- The pebble must have a mass of 50 g.
The mass of a toy car is smaller than the mass of a 50 g egg but greater than that of a 10 g pound coin. What could its mass be?
- 5 g
- 30 g ✓
- 45 g ✓
- 75 g
Using these clues, starting with the object with the smallest mass, put these objects in order.
- 1
  
  ⇔
  
  Leaf
- 2
  
  ⇔
  
  Pebble
- 3
  
  ⇔
  
  Twig

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The size of something does not determine how much mass (or matter) an object has.
Taller containers do not always hold a greater volume of liquid.
If you know the mass and volume of some objects, it is easier to estimate others by comparing them.

Larger objects have a greater mass. Taller containers have a greater capacity and/or volume.

The size of something does not determine how much mass an object has; taller containers may be narrower and so may not hold as much liquid.

Estimate - An estimate is a given value, number or quantity that is near to the true amount; it is a number close enough to the right answer.
Mass - Mass is a measure of how much matter something contains. It is measured by how much something weighs. Mass can be measured in g or kg.
Volume - Volume is the specific amount of liquid in a container. Volume can be measured in millilitres or litres.