Question

3) Calcule o valor das expressões numericas
a 23 – (-5) – (+3) – (-6) =b) 36 – 32 – (+62) – (-3) – 21 = c) (-21) – (-32) – (-20) – (+48) = d) (-98) – (+32) – (-55) – (+99) = e) (-66) – (+66) – (-21) – (+21) = f) (652) – (+325) – (-210) – (-110) =g) (-98) – (-21) – (-33) – (-66) =

Answer 1

Resposta:

a 23 – (-5) – (+3) – (-6) =

23+5-3+6=

28-3+6=

25+6=

31

b) 36 – 32 – (+62) – (-3) – 21 =

36-32-62+3-21=

4-62+3-21=

-58+3-21=

-55-21=

-76

c) (-21) – (-32) – (-20) – (+48) =

-21+32+20-48=

11+20-48=

31-48=

-17

d) (-98) – (+32) – (-55) – (+99) =

-98-32+55-99=

-130+55-99=

-75-99=

-174

e) (-66) – (+66) – (-21) – (+21) =

-66-66+21-21=

-132+21-21=

-111-21=

-132

f) (652) – (+325) – (-210) – (-110) =

652-325+210+110=

327+210+110=

647

g) (-98) – (-21) – (-33) – (-66) =

-98+21+33+66=

-77+33+66=

-44+66=

22