Question

Calculează, grupând convenabil factorii:
8 x 7 x 0 3 x 7x2 5x 8 x 2
7 x 4 x 2 5 x 10 x 5 4 x 9 x 2
2 x 9 x5 10 x 9x9 2 x 3 x 7
Matemat​

Answer 1

Răspuns:

8×7×0=8×0=0

3×7×2=6×7=42

5×8×2=10×8=80

7×4×2=7×8=56

5×10×5=25×10=250

4×9×2=8×9=72

2×9×5=10×9=90

10×9×9=10×81=810

2×3×7=2×21=42