New
New
Year 5

Compare and order decimal numbers with tenths

I can compare and order decimal numbers with tenths.

New
New
Year 5

Compare and order decimal numbers with tenths

I can compare and order decimal numbers with tenths.

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Lesson details

Key learning points

  1. To compare two numbers, you compare digits with the same place value, starting with the largest place-value digit.
  2. If the whole numbers are the same, look at the value of the tenths digit to compare and order.

Keywords

  • Compare - When you compare, you look for similarities and differences in an object or value.

  • Order - You can order numbers by putting them in a place based on a set rule.

  • Place value - The value of a digit in a number based on where it is placed is known as place value.

  • Ascending - Ascending order is when items are arranged from smallest to largest.

  • Descending - Descending order is when items are arranged from largest to smallest.

Common misconception

Pupils think that because a representation has more images/items then it is a larger number.

Encourage pupils to consider the value of each image/item and say this verbally as ___ wholes and ___ tenths.

Allow pupils to notice that when all of the whole number digits are the same, they don't need to compare one column at a time. They can just go straight to the tenths to compare.
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).

Lesson video

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6 Questions

Q1.
Which description of the number does not match the picture?
An image in a quiz
0.9
nine tenths
Correct answer: nine tens
Q2.
Match the symbols to their meaning.
Correct Answer:<,less than

less than

Correct Answer:=,equal to

equal to

Correct Answer:>,greater than

greater than

Q3.
Look at the number line. Tick the missing numbers.
An image in a quiz
5.4
Correct answer: 4.5
Correct answer: 5
0.5
Q4.
What number is the arrow pointing to? Give your answer as a decimal number.
An image in a quiz
Correct Answer: 0.9, zero point nine, nought point nine, nine tenths
Q5.
Write the following number as a decimal number.
An image in a quiz
Correct Answer: 4.3, four point three, for point three
Q6.
The image shows four mixed numbers labelled A to D. Match the decimal numbers to the mixed numbers.
An image in a quiz
Correct Answer:1.7,A

A

Correct Answer:7.1,B

B

Correct Answer:2.3,C

C

Correct Answer:3.2,D

D

6 Questions

Q1.
Write down the symbol that shows greater than.
Correct Answer: >
Q2.
Which symbol shows less than?
Correct answer: <
=
>
Q3.
Select the three numbers that would make the statement correct.
An image in a quiz
Correct answer: 5
3.5
Correct answer: 4.3
2.4
Correct answer: 40.1
Q4.
Order the numbers in ascending order.
1 - 3.6
2 - 5.4
3 - 5.7
4 - 7.5
5 - 7.7
Q5.
Order these numbers is descending order.
1 - 354.2
2 - 345.2
3 - 325.4
4 - 324.5
Q6.
Select the three numbers that could make this statement correct. 3.2 < __________ < 4.2
3.2
Correct answer: 3.6
4.3
Correct answer: 4
Correct answer: 4.1