This key facts covers The Key Rule within Rounding & Estimation for GCSE Mathematics. Revise Rounding & Estimation in Number for GCSE Mathematics with 13 exam-style questions and 6 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 2 of 5 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 2 of 5
Practice
13 questions
Recall
6 flashcards
The Key Rule
Look at the NEXT digit:
• 0, 1, 2, 3, 4 → Round DOWN (keep the digit the same)
• 5, 6, 7, 8, 9 → Round UP (add 1 to the digit)