2. B = -15 + (41 – 72 – 50) + 84
12
10
-12

3. C = -(1 + 2) – (3 + 4) – (5 + 6)
-1
-21
21

4. D = (-9,2 – 5,4) + 7,1 – (6,3 – 4,7)
-9.1
-8
-8.9

5. E = (7 – 5) + (2 – 3) – (-7 + 5)
1
3
13

6. F = -10 – (5 – 3 + 2) + (-13 + 12)
-5
-10
-15

7. G = 12 – (-8 + 4 – 7) – (9 + 3 – 4)
5
10
15

8. H = (7,2 – 1,5) + 6,3 – (7,9 – 4,6)
8.7
7.8
-8.7

9. I = 5 – [(12 + 5 – 11) – (7 + 1)]
10
7
4

10. I = -1 + 2 – 3 + 4 – 5 + 6 – 7 + 8
3
4
-3

Score =
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