Cross-Number Puzzle

Sircar, Swati (2025) Cross-Number Puzzle. At Right Angles (23). pp. 34-35. ISSN 2582-1873

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Abstract

This cross-number puzzle is a follow up to the article on Fact Families in the same issue. An addition fact family is essentially a set of three natural numbers, such that the sum of two of these numbers is the third. For example, {2, 3, 5} forms a fact family since 2 + 3 = 5. But the set {6, 4, 1} does not form an addition fact family.

Item Type:	Articles in APF Magazines
Authors:	Sircar, Swati
Document Language:	Language English
Uncontrolled Keywords:	fact families, addition, subtraction, puzzle, crossword Cross-Number Puzzle
Subjects:	Natural Sciences > Mathematics
Divisions:	Azim Premji University - Bengaluru > University Publications > At Right Angles
Full Text Status:	Public
URI:	http://publications.azimpremjiuniversity.edu.in/id/eprint/6471
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