Year 5 - Maths
Use known facts to carry out conversions that correspond to 10 and 100 parts
Converting units
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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 apply memorised unit conversions to convert between units of measure and solve problems involving converting between units of time and money.
Lesson Summary
You will learn to use known facts to carry out conversions that correspond to 100 parts.
Key Notes
- If 1 cm = 10 mm, then 3 cm = 3 x 10 mm = 30 mm
- If 1 m = 100 cm, then 3 m = 3 x 100 cm = 300 cm
- If £1.00 = 100 p, then £3.00 = 3 x 100 p = 300 p
Vocabulary To Learn
- Equivalent: If two or more things have the same value, they are equivalent.
- Convert: Change a value or expression from one form to another.
Common Mistakes To Avoid
- Pupils might see a number like 9.2 m and incorrectly partition it into 9 m and 2 cm.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
If 1 cm = 10 mm, then 3 cm = 3 x 10 mm = 30 mm. If 1 m = 100 cm, then 3 m = 3 x 100 cm = 300 cm.
2. Use this key word in a maths sentence and explain it clearly. 'Equivalent'
If two or more things have the same value, they are equivalent. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils might see a number like 9.2 m and incorrectly partition it into 9 m and 2 cm. Correction: It is essential that pupils are exposed to lots of examples of visual models, such as parts of circles and number lines, so that they have a secure understanding of why, in this case, the 0.2 m is equal to 20 cm.
More Lessons In This Unit
- Convert between miles and kilometres and pounds and Euro Study Guide
- Convert from larger to smaller units of measure Study Guide
- Convert from smaller to larger units of measure Study Guide
- Convert to and from fraction and decimal quantities of larger units Study Guide
- Solve problems involving converting between units of time Study Guide
- Solve problems involving converting units in different contexts Study Guide
- Solve problems involving different units of measure Study Guide
- Understand approximate equivalence between metric and imperial units Study Guide
- Use known facts to derive common conversions over 1 Study Guide
Browse all guides in the Year 5 Maths guide library.