Question

1. Complete as lacunas.
a) 27 + (- 3) = _______,pois _______ (- 3) = _______.
b) (- 42) + (- 6) = _______,pois _______ (- 6) = _______.
c) (- 64) + 8 = _______,pois _______ 8 = _______.
d) 75 + 5 = _______,pois _______ 5 = _______.

Answer 1

Resposta:

27+ (-3)= 24, pois 27- (-3)= 30

(-42)+(-6)= -48, pois 42-(-6)= 48

(-64)+8= -56, pois (+64)-8= 58

75+5= 80, pois 75-5=70