Question

Model each calculation using counters.
Describe where the answer is in your model.

a) 8 + (−5)

b) −5 − (−3)

c) −7 − 8

Answer 1

Answer:

a) 8 + (-5)

=> 3

b) −5 − (−3)

=> 8

c) -7 -8

=> -1

therefore,

• by modal calculation counters we got question a as positive result .

• in question b we got positive result as well .

• and in c we got negative answer .

Hence, Proved !