Unfortunately, the browser used for posting questions on this site is useless for mathematical questions because it rejects many common symbols. Your question is, therefore, very garbled and any answer would require me to make a lot of guesses as t o your intent. I suggest that you resubmit using words, such as "plus", "times".
It is: 1/10 plus 8/100 = 9/50 in its simplest form or 0.18 as a decimal
111.1
t That reduces to 1 1/10 which equals 1.1 in decimal form.
In binary it's the equivalent of decimal 3.
10 tenths is equal to 1 whole or 1.0 in decimal form.
100 plus 10 plus 1 plus 110 is 221 when expressed as a decimal to base 10.
It is: 1/10 plus 8/100 = 9/50 in its simplest form or 0.18 as a decimal
decimal form of 10 tenths = 1.010 tenths in decimal = 1
2 decimal, or 10 binary.
It is: 1 and 3/10 = 1.3 in decimal form
111.1
Expressed as a mixed number in its simplest form, 9/10 + 2/10 = 1 1/10 or one and one tenth. Expressed as a decimal, this is equal to 1.1.
1 2/10 or 12/10 can be written as 1.2 in decimal form
t That reduces to 1 1/10 which equals 1.1 in decimal form.
In standard form it is 1*10^1.
The number one and a half as 1.5 in decimal form.
The fraction one tenth (1/10) has the decimal form 0.1