Subtrahiere diese vier Zahlen (2)

Subtrahiere diese vier Zahlen.

1. 78 – 24 – 17 – 20 =
2. 79 – 19 – 17 – 26 =
3. 64 – 21 – 13 – 17 =
4. 94 – 24 – 23 – 24 =
5. 92 – 25 – 21 – 25 =
6. 74 – 23 – 17 – 17 =
7. 98 – 24 – 25 – 24 =
8. 82 – 24 – 22 – 14 =
9. 81 – 22 – 21 – 17 =
10. 74 – 18 – 15 – 26 =
11. 62 – 15 – 12 – 23 =
12. 74 – 18 – 16 – 24 =