Compare decimals
- Line up decimal points.
- Add zeros if helpful.
- Compare from left to right.
Answer: 0.45 < 0.5 because 0.45 < 0.50
🔢 Number
Comparing decimals
Learn comparing decimals with a GCSE-style explanation, help guide, worked example, practice question and flashcards.
Global XP
Level 10 / 100 XP
1. Explanation
Key idea
- Comparing decimals is part of decimals and appears often in KS3–GCSE maths.
- Compare decimals by lining up place values.
- Use the worked model, help guide, interactive question and flashcards to practise comparing decimals until the steps feel automatic.
Real-life examples
- Shopping, sport, travel, science, design and everyday decisions all use this skill.
2. Visual
Comparing decimals learning map
Understand the key idea → follow the help guide → practise a question → check your method → build speed with flashcards.
3. Help guide
How to tackle Comparing decimals
- Learn the rule: Compare decimals by lining up place values.
- Worked model: Line up decimal points. Add zeros if helpful. Compare from left to right.
- Try the interactive question without looking at the answer first.
- Use the flashcards to test the rule, the method and a common check.
4. Worked examples
Step-by-step working
5. Interactive questions
Try it yourself
Which is larger: 0.7 or 0.68?
6. Flashcards
Master quick recall
Flip each card, then choose whether you know it or need more practice.
0 mastered
FrontRule for Comparing decimals
BackCompare decimals by lining up place values.
FrontExample answer: Which is larger: 0.7 or 0.68?
Back0.70 is greater than 0.68, so 0.7 is larger.
FrontCommon check for Comparing decimals
BackCheck units/notation, compare with an estimate, and make sure the answer matches the question.
7. Finish
Complete this topic
When you have read the examples, tried the question and reviewed flashcards, claim your topic completion XP.