Salut!
Calculeaza grupând convenabil termenii :
____________________
⓵ 2 × 4 × 4 =
8 × 4 = 32
⓶ 2 × 4 × 4 =
2 × 16 = 32
____________________
⓵ 9 × 2 × 3 =
18 × 3 = 54
⓶ 9 × 2 × 3 =
9 × 6 = 54
____________________
⓵ 6 × 4 × 2 =
24 × 2 = 48
⓶ 6 × 4 × 2 =
6 × 8 = 48
____________________
⓵ 3 × 2 × 7 =
6 × 7 = 42
⓶ 3 × 2 × 7 =
3 × 14 = 42
____________________
⓵ 5 × 3 × 2 =
15 × 2 = 30
⓶ 5 × 3 × 2 =
5 × 6 = 30
____________________
⓵ 6 × 3 × 3 =
18 × 3 = 54
⓶ 6 × 3 × 3 =
6 × 9 = 54
Succes! :)