Question

Calcule: a) (+28) + (+17)= b)(-19) + (-11)= c)(+30) + (-13)= d) (+22) + (-50)= e) (-8) + (+26)= *



2) Efetue e calcule :a) 3 – 7 + 4 + 7 – 1 – 7 = b) 16 – 8 – 4 + 16 – 4 + 8= c)4 + 100 – 100 – 7 + 6 – 1= *



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Answer 1

2) Efetue e calcule :a) 3 – 7 + 4 + 7 – 1 – 7 = b) 16 – 8 – 4 + 16 – 4 + 8= c)4 + 100 – 100 – 7 + 6 – 1= *