Hello, I am a pretty big number. Add a line to make me many things

Question

I am a pretty big number:

Here are a few challenges for you:

1. Add a line to make me a millennium.

2. Add a line to make me a millennium and ten.

3. Add a line to make me a century and one.

4. Add a line to make me a time.

5. Add a line to make me lunch.

6. Add a squiggle to make me the Answer to the Ultimate Question of Life, the Universe, and Everything.

Note that a straight line is meant by “line”, and also, none of these parts are related to each other (ie. always add the line/squiggle to the original image).

Answer 1

1. Add a line to make me a millennium.

   Add a horizontal line before the third 1. 1010 - 10 = 1000

2. Add a line to make me a millennium and ten.

   Cross the third 1. 1010 + 0 = 1010

3. Add a line to make me a century and one.

   Add a slash before the third 1. 1010/10 = 101

4. Add a line to make me a time.

   Incorrect Guess :( Either a slash, or a dash depending on how you prefer dates. 10/1010 or 1010-10 (October 1010)
   From @Deusovi: Add a line above the second 1 to make it a T. 10TO10 (10 minutes to 10)

5. Add a line to make me lunch.

   Strikethrough the entire line to make a kebob. . 101010 .

6. Add a squiggle to make me the Answer to the Ultimate Question of Life, the Universe, and Everything.

   Add the subscript 2 to make it binary. $101010_2$