Year 7 - Maths
Securing understanding of place value in metric units
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 convert statements about measure.
Key Notes
- In order to compare metric measures, conversion may be necessary.
- Metric measures can be converted by using place value.
- Real-world examples can help us see if the conversions have the correct magnitude.
Vocabulary To Learn
- Metric: Metric units are based around the standard units of metre, gram and litre.
- Prefix: A prefix is a group of letters attached to the front of a root (word) to make a new word, for example tricycle.
- Centi: Centi placed before a unit means (1/100)
- Milli: Milli placed before a unit means (1/1000)
- Kilo: Kilo placed before a unit means 1000 times.
Common Mistakes To Avoid
- Kilo gram is 1000 bigger than a gram, so 40 g = 1000 x 40 kg
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
In order to compare metric measures, conversion may be necessary. Metric measures can be converted by using place value.
2. Use this key word in a maths sentence and explain it clearly. 'Metric'
Metric units are based around the standard units of metre, gram and litre. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Kilo gram is 1000 bigger than a gram, so 40 g = 1000 x 40 kg. Correction: Kilo gram is 1000 bigger than a gram so 1 kg = 1000 g.
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 decimals 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
Browse all guides in the Year 7 Maths guide library.