Practice questions
Challenge questions
Multi-step problems mixing conversion and calculation
Word problems
Real-life contexts — read carefully and identify the calculation needed
Reminders
Standard form: \(a\times 10^n\) where \(1\leq a<10\).
To SF: identify first sig fig, count decimal moves. From SF: move decimal by power amount.
Calculating: × → add powers, ÷ → subtract powers. Always adjust so \(1\leq a<10\).