Respuesta :
Since 99=100-1,
we use the distribution property,
6(99)=6(100-1)=600-6 = 594
With minimum practice, the technique can be mastered in a short time.
For example, 15*998 = 15(1000-2) =15000-30=14970
we use the distribution property,
6(99)=6(100-1)=600-6 = 594
With minimum practice, the technique can be mastered in a short time.
For example, 15*998 = 15(1000-2) =15000-30=14970