CBSE Class 6 Mathematics
Question 12 of 41
The Other Side of Zero — Question 15
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Question Evaluate the following differences using tokens. Check that you get the same result as with other methods you now know:
(a) (+10) – (+7)
(+10) – (+7) = 3
(b) (-8) – (-4)
Solution:
(-8) – (-4) = -4
(c) (-9) – (-4)
Solution:
(-9) – (-4) = -5
(d) (+9) – (+12)
Solution:
Start with 9 positives.
But there are not enough tokens to take out 12 positives. So, we will add 3 extra zero pairs and then take out 12 positives.
(+9) – (+12) = -3
(e) (-5) – (-7)
Solution:
Start with 5 negatives.
But there are not enough tokens to take out 7 negatives. So, we will add 2 extra zero pairs and then take out 7 negatives.
(-5) – (-7) = +2
(f) (-2) – (-6)
Solution:
Start with 2 negatives.
But there are not enough tokens to take out 6 negatives. So, we will add 4 extra zero pairs and then take out 6 negatives.
(-2) – (-6) = +4
10.2 The Token Model Figure it Out (Page No. 259)