Reply To: Challenge Questions – 2

Home Forums VMTTC Online Discussion Forum Challenge Questions – 2 Reply To: Challenge Questions – 2

#31334
Satya
Participant

57 x 37 can be written as 6(3) x 4(3) – using bar numbers

We can now follow the same rule that we use to calculate 47 x 67 .

So first half –> (6*4) + (-3) as 3 is a bar number we have to actually subtract it.

24-3 = 21.

now second half –> (-3) * (-3) = 9. we have to write 09.

so 57×37 = 6(3) x 4(3) = 2109

 

error:
Scroll to Top
Visit Us On FacebookVisit Us On Youtube