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Year 5

Compare and order decimal numbers with tenths

I can compare and order decimal numbers with tenths.

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New
New
Year 5

Compare and order decimal numbers with tenths

I can compare and order decimal numbers with tenths.

Download all resources
Share activities with pupils

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.

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.

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.

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).

Video

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Starter quiz

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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

Exit quiz

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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