Question

calculeaaza folosind adunarea repetata 3×17=3×(10+17)=30+21=51 6×14,5×20,4×9,5×16,4×23,6×11

Answer 1

3×17= 3×(10+7)= 30+21= 51

6×14= 6×(10+4)= 60+24= 84

5×20= 5×(20+0)= 100+0= 100

4×9= 9+9+9+9= 36

5×16= 5×(10+6)= 50+30= 80

4×23= 4×(20+3)= 80+12= 92

6×11= 6×(10+1)= 60+6= 66