Zadanie 3.
10 + 5 = 11+6 = 18+ 1 =
13 + 5 =
14 + 5 =
12 + 7 =
13 + 5 = 17 + 2 = 19 + 0 =
18- 2 = 14-3 = 18-6 =
12 + 2 + 3
11 +1+3
13 + 3 + 3 15 + 2 + 2
14 + 3 + 2 17+1+1
12 + 5 + 2
13 + 4 + 2 10 + 4 + 5
19-5 = 19-8 = 17-6 = 16-4 = 19-7 =
Zadanie 4.
90