Multiplication of Integers
Last updated at January 21, 2026 by Teachoo
Transcript
Question 3 - Figure it out (Page 31) Consider the numbers represented by the following tokens: We can see that all of them represent the number (– 2). Now, take 4 times each of these token sets. That is, place each set into the empty bag 4 times. What integer do we get as the final answer in each case? Do we get different answers because the sets look different, or the same answer because they all represent – 2? Here (a) shows 2 red tokens: -2 (b) shows 2 red tokens and 2 zero pairs (green+red). The zero pairs cancel out. Remaining: -2 (c) shows 2 red tokens and 4 zero pairs. The zero pairs cancel out. Remaining: -2 They all represent the same integer: –2. Adding zero pairs does not change the value of the number.