Extending the principle of cross numbers, these puzzles aim at those of above average mathematical ability, particularly those who enjoy games of strategy. Written from a classroom perspective, the puzzles focus on key aspects of the curriculum and are graded according to difficulty. Solved deductively, the puzzles difficulty can be moderated by using hints provided.
Answers are also provided for teacher or selfmarking.

Knowing the order in which arithmetical operations take place needs to be instinctive for students - starting to learn about them in upper primary school and consolidating until the age of 14. This book # brings to the teacher - or parent's - aid: worked examples, questions and puzzles. # dispels any myths, misconceptions and misunderstandings concerning the order of operations # fosters an enjoyment of problem and puzzle solving involving order of operations.