2011 S1-02 Maths Blog
Chapter 2 (Real Numbers) Integers - Multiplication (Basic Concepts)
Draw comparison between
2 x 3
(i.e. 2 groups of positive 3)
and
2 x (-3)
(i.e. 2 groups of negative 3)
2 x 3 = 6
2 x (-3) = -6
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