5 x 3 x 1 =
10 x 5 x 1 =
23 + 15 =
2.021 + 15.000
6 x 3 =
10 x 4 x 2 =
7 x 3 + 4 =
( 3 + 6 + 9 ) + 5 =
7 + 10 + 0 =
40 + 25 =
17.
38.
80.
17.021
65.
25.
23.
15.
50.
18.
