“Cross Sums, Student Workbook 1” contains a suite of thirty number puzzles. 
 

The student uses the “Across” and “Down” clues to fill in the puzzle-grids.
These number puzzles are based on the following numerical concepts, skills and competencies: whole number computation (addition, subtraction, multiplication, division), computation involving fractions, decimals and percentages, prime numbers, properties of angles, properties of time, metric measurement and conversions, money conversions and number sequences.

These number puzzles can be an exciting way to revise, practise and consolidate important computational skills and to enhance numerical understanding in important conceptual domains.