Scrie numerele: 16, 27, 20, 56, 64, 81 ca produse de 2, apoi de 3 factori, ca în model: 16=2×8 16=2×2× 4 robleme​

1. 16 = 2 × 8

16 = 2 × 2 × 4

2. 27 = 3 × 9

27 = 3 × 3 × 3

3. 20 = 2 × 10

20 = 2 × 2 × 5

4. 56 = 2 × 28

56 = 2 × 2 × 14

56 = 2 × 2 × 2 × 7

5. 64 = 2 × 32

64 = 2 × 2 × 16

64 = 2 × 2 × 2 × 8

6. 81 = 3 × 27

81 = 3 × 3 × 9

81 = 3 × 3 × 3 × 3

Răspuns:

27=3×9

27=3×3×3

20=2×10

20=2×2×5

56=7×8

56=8×2×4

64=8×8

64=2×4×8

81=9×9

81=3×3×9