Year 5 - Maths
Identify tenths as part of a whole
Understand tenths as part of a whole, represent and calculate mentally
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will describe, represent and order tenths as a decimal fraction. They will round a decimal number with tenths to the nearest whole number and calculate mentally with decimal numbers including tenths.
Lesson Summary
You will learn to identify tenths as part of a whole.
Key Notes
- The whole is divided into ten equal parts and one of the parts is one tenth of the whole.
- There are ten tenths in one whole.
- One whole can be divided into ten tenths.
Vocabulary To Learn
- equal: Equal means exactly the same amount or value.
- tenth: A tenth is the name we give to one part of ten equal parts.
Common Mistakes To Avoid
- Pupils think one tenth consists of one shaded part and ten un-shaded parts.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
The whole is divided into ten equal parts and one of the parts is one tenth of the whole. There are ten tenths in one whole.
2. Use this key word in a maths sentence and explain it clearly. 'equal'
Equal means exactly the same amount 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: Pupils think one tenth consists of one shaded part and ten un-shaded parts. Correction: Encourage children to use the stem sentence to identify the whole and how many parts make it up each time.
More Lessons In This Unit
Browse all guides in the Year 5 Maths guide library.