Question

8 x 7 x 0 7x 4 x 2 2 x 9 x 5 Calculează, grupând convenabil factorii: 3X 7x2 5 x 10 x 5 10 x 9 x 9 5x8x2 4x9x2 2x3x7​

Answer 1

Răspuns:

a)8×0=0×7=0 b)2×4=8×7=56 c)2×5=10×9=90 d)3×2=6×7=42 e)5×5=25×10=250 f)9×9=81×10=810 g)5×2=10×8=80 h)4×2=8×9=72 i)2×3=6×7=42