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Year 5 - Maths

Compare and order decimal numbers with hundredths

Understand hundredths as parts of a whole and represent

Unit Summary

In this unit pupils will identify hundredths as part of a whole and describe and represent hundredths as a decimal fraction. They will compare and order decimal numbers with hundredths.

Lesson Summary

You will learn to compare and order decimal numbers with hundredths.

Key Notes

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

Vocabulary To Learn

  • Compare: When you compare, you look for similarities and differences in an object or value.
  • Place value: The value of a digit in a number based on where it is placed.
  • Order: Putting numbers or objects in position based on a set rule.
  • Ascending: When items are arranged from smallest to largest.
  • Descending: When items are arranged from largest to smallest.

Common Mistakes To Avoid

  • A number with more digits after the decimal point is greater than a number with fewer digits.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

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

2. Use this key word in a maths sentence and explain it clearly. 'Compare'

When you compare, you look for similarities and differences in an object or value. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: A number with more digits after the decimal point is greater than a number with fewer digits. Correction: Create the numbers using place value counters or base 10 blocks and re-iterate the magnitude of each digit within the number.

More Lessons In This Unit

Browse all guides in the Year 5 Maths guide library.