This key facts covers Key Rules for Place Value within Place Value & Ordering for GCSE Mathematics. Revise Place Value & Ordering in Number for GCSE Mathematics with 13 exam-style questions and 22 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 3 of 12 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 3 of 12
Practice
13 questions
Recall
22 flashcards
Key Rules for Place Value
- Moving left: Each column is 10× bigger (multiply by 10)
- Moving right: Each column is 10× smaller (divide by 10)
- Zero as placeholder: 205 has zero in the tens column - this is crucial!
- Decimal point: Separates whole numbers (left) from decimal parts (right)
- Leading zeros: 0.5 and 0.50 are exactly the same value
- Trailing zeros: In whole numbers, 500 needs both zeros as placeholders