Diagnumb puzzles for teens and adults. These puzzles use subtraction between single digit numbers and deductive reasoning (The process of elimination) between multiple-choice answers to solve, and are timed-based (optional) to rank your score to win. Puzzle solutions are correct when the difference between all numbers next to each other in all diagonal rows =2 or more without repeating a number in any diagonal row. Each book contains a practice puzzle and 30 increasingly challenging new puzzles with solutions. Game rules, definition of game terms, and how to solve are explained using illustrated examples.
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Vendeur : Lucky's Textbooks, Dallas, TX, Etats-Unis
Etat : New. N° de réf. du vendeur ABLIING23Mar2912160347639
Quantité disponible : Plus de 20 disponibles
Vendeur : THE SAINT BOOKSTORE, Southport, Royaume-Uni
Paperback / softback. Etat : New. This item is printed on demand. New copy - Usually dispatched within 5-9 working days 249. N° de réf. du vendeur C9781940116037
Quantité disponible : Plus de 20 disponibles