60+10-10
64 5/10
5 and 64/100
6.4 = 64/10 or 32/5 in fraction
5^4
64 written in base 2 is 1000000
2, 3, 4, 5, 64 of the Federalist Papers.
.64
write five names for 64
64%
You can write 45 in base 10, in base 9, in base 8, etc.; or you can make up several calculations (additions, subtractions, etc.) that result in 45.
-64/1 Or you could write it as -64 over 1