Remember that in binary each place value column is half the one to its left/ twice the one on its right. The binary point comes after the ones (or unit) column.
1101.1 = 1×8 + 1×4 + 0×2 + 1×1 + 1×0.5 = 8 + 4 + 1 + 0.5 = 13.5
Decimal 27 is 11011 in binary
27 = 11011
11011 is a binary number which represents the number 27
11011+1101
The decimal number "27" is written in binary as 11011.This is because binary has a base of 2. This means that the digits are representing multiples of powers of 2 (as opposed to 10 in decimal). This number in binary means (1 * 20) + (1 * 21) + (0 * 22) + (1 * 23) + (1 * 24). In decimal this equals 1 + 2 + 0 + 8 + 16. This, of course, equals 27.
11011
100111 +11011 ______ 1000010
11122
11011
11011
It is 11011.
The decimal number 101 is represented by the binary number 1100101.