Reply To: Challenge Questions – 2 Home › Forums › VMTTC Online Discussion Forum › Challenge Questions – 2 › Reply To: Challenge Questions – 2 February 16, 2021 at 2:01 am #31131 SatyaParticipant 29 can be written as 30(1) i.e. 30-1. 23 x 29 –> (23 x 30) – (23 x 1) –> 690 – 23 = 667 Yes, bar numbers are useful in multiplication.
