3 x 13
To find the GCF of 13 and 39, you can list the factors of each number. The factors of 13 are 1, 13. The factors of 39 are 1, 3, 13, 39. 13 is the GCF of 13 and 39. 3 is a prime number has only two factors: 1 and 13. 13 will divide into 39 three times. Since 13 is a prime number that will divide into 39, it has to be the GCF of 13 and 39.
3 x 13
Aside from the obvious 39 & 1, 3 x 13 = 39.
The GCF is 13. 39=13*3 169=13*13
13. 3x13=39. 39/3=13
(39 x 26) + (39 x 13) = 39 x 39 = 1521
39
3 times 3 x 13 = 39
None of the conventional times tables have 13 in them, because it is prime. The only times table that would have 13 and 39 in it would be the 13 times table!
39/1
13 time 3 = 39.
13 goes into 39 3 times 13 goes into 52 4 times
13 goes into 39 three times. If that's not what you were asking, 39 goes into 78 twice, and 13 goes into 78 six times.
39 ÷ 3 = 13
If you do do 4 × 13 = 39 you will get it wrong. Working it out: 4 × 13 = 52 To get 39, you need to calculate: 3 × 13 = 39.
1 x 39, 3 x 13 = 39