10 eigths or 1 and 2 eights
2^7 x 5 = 640
640: Prime factorization: (2^7)(5) Every factor: 1,2,4,5,8,10,16,20,32,40,64,80,128,160,320,640
One eighth is 1/8. Two eighths (2/8) is two one eighths, that is, (1/8) + (1/8) or 2 x (1/8). So five eighths (5/8) would be five one eighths, that is, (1/8) + (1/8) + (1/8) + (1/8) + (1/8) or 5 x (1/8). There are five eighths (1/8) in five eighths (5/8).
2/8 is .25 as a decimal
640 = 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 5
There are: 17
The answer is 2 and three eighths
2 six eighths
2
How about: 2*320 = 640
9/8 - 2/8 => (9- 2)/ 8 => 7/8 The ANSWER!!!!
1
-1/2
The prime factors of 640 are: 2 and 5.
10 eigths or 1 and 2 eights
Maybe you need to put your brain into gear of you can't add 2 to 5. The answer's 7 eighths, by the way.