A complete, self-checking practice sequence from divisibility to percentages — built so you can master it on your own, one clean set at a time.
| Unit | Focus | Once learned... |
|---|---|---|
| D1 | Factors & Multiples | Reverse-thinking of multiplication & division, spotting primes |
| D2 | GCF & LCM | Tools for simplifying & combining fractions |
| D3 | Ratio Concept | Writing and comparing a : b |
| D4 | Rate Tables & Unit Rate | Equivalent ratios, unit price & speed |
| D5 | Proportions | Solving a : b = c : x by cross-multiplying |
| D6 | Percentage | Where fractions, decimals & ratios meet |
Before you dive in, try these three. If you can answer all three instantly, you're ready for any set below.