Question

7. Calculează:
a) 10 - 9+8-7+6-5+4 - 3+2-1
b)10 + 8 +6+4+2 - (9 + 7 + 5 + 3 + 1).
c)2-1 +3–2+4-3+5 – 4+6-5+7 –
- 6+8 -7+9–8+10-9
d) 1+ 2+ 3+ 4+ 5+ 6+ 7 + 8 + 9 +10 – 1 –
-2 -3 -4-5 -6+8​

Answer 1

Răspuns:

a) 2+3=5

b) 30-25=5

c) 8-2=6

d) 55-13=42