New
New
Year 7

Securing understanding of ordering and comparing numbers

I can confidently order and compare a variety of numbers and measures.

New
New
Year 7

Securing understanding of ordering and comparing numbers

I can confidently order and compare a variety of numbers and measures.

Lesson details

Key learning points

  1. In order to compare measures, conversion may be necessary.
  2. Measures can be converted using place value.
  3. Values can be ordered using inequality symbols.

Common misconception

The number with the largest value is the greatest measurement.

Converting to the same unit can be helpful before comparing the place value of the digits. e.g. 0.4 m is bigger than 40 mm.

Keywords

  • Inequality - An inequality is used to show that one number or measurement is not equal to another.

Be careful when talking about metric units. For example, cm being 100th of a metre, that pupils don't think that to covert cm to m you divide by 100.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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6 Questions

Q1.
The metric units of capacity are millilitre, centilitre and __________.
Correct Answer: litre, Litre
Q2.
Match together each unit with its type of measurement.
Correct Answer:millimetres,length

length

Correct Answer:milligrams,mass

mass

Correct Answer:millilitres,capacity

capacity

Q3.
The symbol < means:
Correct answer: less than
greater than
less than or equal to
greater than or equal to
equal to
Q4.
What is 1.3 metres in centimetres?
Correct answer: 130 centimetres
13 cm
0.013 cm
1300 cm
Q5.
Select the correct statements.
0.21 ml < 0.12 ml
0.12 ml > 0.21 ml
Correct answer: 0.21 ml > 0.12 ml
Correct answer: 0.12 ml < 0.21 ml
0.12 ml = 0.21 ml
Q6.
Starting with the smallest measurement, sort these measurements into ascending order.
1 - 0.23 cm
2 - 0.302 cm
3 - 0.32 cm
4 - 2.3 cm
5 - 3.02 cm

6 Questions

Q1.
Match each of these symbols with its definition.
Correct Answer:<,less than

less than

Correct Answer:> ,greater than

greater than

Correct Answer:=,equal to

equal to

Q2.
Select the correct symbol to replace the "?" in this statement: 1.45 m ? 14.5 cm
Correct answer: >
<
=
Q3.
Select all the correct statements.
420 ml < 42 cl
42 ml > 42 cl
Correct answer: 4200 ml > 4.02 l
Correct answer: 0.402 l < 4.2 cl
Q4.
Select all the lists which can be ordered.
Correct answer: 35 cl, 35 l, 35 ml
23 mm, 23 mg, 23 m, 23 cm
Correct answer: 98 kg, 980 g, 9.8 mg, 98 g
7.8 kg, 7.8 ml, 78 mg 78 mm
Q5.
Starting with the smallest, sort these distances into ascending order.
1 - 203 cm
2 - 2.3 m
3 - 302 cm
4 - 3200 mm
Q6.
Starting with the smallest, sort these masses into ascending order.
1 - 5670 mg
2 - 6.57 g
3 - 6750 mg
4 - 0.0567 kg
5 - 76.5 g