19 times 2=38
1 x 38, 2 x 19.
1 x 38, 2 x 19.
1 x 38, 2 x 19.
As a product of its prime factors: 2*19 = 38
6x2x2
38 is an even number so it is divisible by 2. 38 = 2*19 19 is a prime so there are no further factors.
With whole posieive numbers, there are two. 1 x 38 and 2 x 19.
37 x 2
How about: 8*9 = 72
38 x 43 = 1634 which in Roman numerals is MDCXXXIIII Multiplying XXXXIII (43) by XXXVIII (38) in Roman numerals: XXXXIII*XXXVIII = XXX(XXXX+III)+VIII(XXXX+III) Multiplying out the brackets = MCC+LXXXX+CCCXX+XXIIII Total sum of numerals = MDCXXXIIII (1634) By separating the numerals into tens and units makes multiplication a lot easier. In a way this is what we do today when tackling long multiplication.
30+38