"Twenty genuine number-deduction puzzles at Level 18: Fractions, decimals and percentages. Students combine mathematical clues to eliminate candidates and identify one unique answer; these are reasoning puzzles, not equations disguised as sentences. This is Version 01, one of twenty parallel sets at the same difficulty.

Level focus: Equivalent representations used together in one deduction chain.

Included: editable PowerPoint, full-page printable PDF, condensed 20-puzzle PDF, complete answer explanations, the 20-level progression ladder, reusable 1–100 working grids and the Beyond Printables product overview.

Useful for whole-class reasoning, starters, independent practice, homework, tutoring, cover lessons and repeat retrieval. Levels describe mathematical demand rather than a fixed year group."