RIC-0563 Developing algebraic thinking
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PRIMES AND COMPOSITES<br />
Teachers notes<br />
Prime stack<br />
Prime stack<br />
involves using all 10 number tiles to create four prime<br />
numbers, a 1-, 2-, 3- and 4-digit number. Some solutions are given<br />
below.<br />
3 61 409 2857<br />
5 47 601 8923<br />
2 43 709 5861<br />
This activity piggybacks what was done in More primes. Creating<br />
five composite numbers, regardless of size, can be accomplished in<br />
many ways. In fact, six or seven composite numbers can be created:<br />
4, 9, 27, 30, 51, 68; 4, 6, 8, 9, 27, 30, 51<br />
38 DEVELOPING ALGEBRAIC THINKING www.ricgroup.com.au R.I.C. Publications ®<br />
ISBN 978-1-74126-088-5
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