Question

calculeaza descompunand al doilea factor in produs dupa modelul dat a. 3 × 60, 5 × 80, 7 × 40 b. 9 × 60, 8 × 80, 6 × 80 c. 7 × 60 , 6 × 80 , 5 × 99 VĂ ROG DAU COROANĂ​

Answer 1

Răspuns:

3×60=3×6×10=18×10=180

5×80=5×8×10=40×10=400

7×40=7×4×10=28×10=280

9×60=9×6×10=54×10=540

8×80=8×8×10=64×10=640

6×80=6×8×10=48×10=480

7×60=7×6×10=42×10=420

6×80=6×8×10=48×10=480

5×99=(5×100)-1=500-1=499