Year 7 - Maths
Place value in decimals
Place value
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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 revisit, secure and develop their understanding of place value with integers, decimals, fractions, metric and imperial units. This knowledge is then extended to order and compare numbers of increasing complexity.
Lesson Summary
You will learn to state place value in decimals, including recognising exponent and fractional representations of the column headings.
Key Notes
- The column headings for decimals can be expressed in different ways.
- A decimal can be represented by using exponentials in the column headings.
- A decimal can be represented by using fractions in the column headings.
- You can state place value in decimals with column headings expressed in different ways.
Vocabulary To Learn
- Decimal form: A number is in decimal form when the decimal point is shown and there are digits to the right of the decimal point.
Common Mistakes To Avoid
- Students can incorrectly insert a digit in the wrong place value column.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
The column headings for decimals can be expressed in different ways. A decimal can be represented by using exponentials in the column headings.
2. Use this key word in a maths sentence and explain it clearly. 'Decimal form'
A number is in decimal form when the decimal point is shown and there are digits to the right of the decimal point. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Students can incorrectly insert a digit in the wrong place value column. Correction: Printing or white board drawings of a place value chart will support student understanding of the different column headings and place value.
More Lessons In This Unit
- Checking understanding of ordering and comparing numbers Study Guide
- Checking understanding of place value in integers Study Guide
- Checking understanding of place value in metric units Study Guide
- Deepening understanding of place value in integers Study Guide
- Exponential and fractional column headings Study Guide
- Place value in imperial units Study Guide
- Problem solving with place value Study Guide
- Securing understanding of ordering and comparing numbers Study Guide
- Securing understanding of place value in integers Study Guide
- Securing understanding of place value in metric units Study Guide
Browse all guides in the Year 7 Maths guide library.