Chapter 6 – Measures

Consider the following statements and click to reveal the answer.

1. The weight of an average man is 72 kg. What will it be on the moon?

Answer:

12kg

2. The volume of a box is 400 cubic centimetres. What is its capacity?

Answer:

400 ml

3. What are the three important stages of development in children’s under­standing of measurement identified by the National Curriculum?

Answer:

The three important stages of development in children’s understanding of measurement are:

  • direct comparison using matching, with no actual measuring;
  • using non-standard units;
  • using standard units.

4. Name the two different systems of units of measurement used in the UK.

Answer:

Metric and Imperial.

5. The SI determines the units of measurement in the metric system. What does SI stand for?

Answer:

System International

6. Which aspect of measurement uses the same units in both systems?

Answer:

The aspect of measurement that uses the same units in both systems is Time – seconds, minutes, hours.

7. Complete the following table to show the units of measurement:

ch_6-1.jpg

Answer:

ch_6-2.jpg

8. Complete the following approximate equivalences:

ch_6-3.jpg

Answer:

ch_6-4.jpg

9. The following formulae give the volumes of which regular 3-D shapes?

ch_6-5.jpg

Answer:

The formulae give the volumes of the following regular 3-D shapes:

ch_6-6.jpg

10. Which formulae would you use to calculate the surface area of the following?

(a) A cube
(b) A circle

Answer:

ch_6-7.jpg