Fact families
Sircar, Swati (2025) Fact families. At Right Angles (23). pp. 30-33. ISSN 2582-1873
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Abstract
A fact family is essentially a group 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 {7, 4, 2} does not form a fact family. In a fact family, the order of them elements does not matter. If two of the numbers of a fact family are identical, the third number will either be 0 or it will be twice the repeating number, i.e., if 5 and 5 are the repeating numbers then {5,0,5} and {5,5,10} are both fact families. Is it possible for all three members of a fact family to be identical? Yes - provided the members of that fact family are each equal to 0!
| Item Type: | Articles in APF Magazines |
|---|---|
| Authors: | Sircar, Swati |
| Document Language: | Language English |
| Uncontrolled Keywords: | Numbers, addition, subtraction, observation, manipulation |
| 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/6470 |
| Publisher URL: | https://azimpremjiuniversity.edu.in/ |
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