>So, to recap...
>
>1. Find first non-zero digit
>2. Look at the next digit
> a. If the next digit is >= 5, round first digit up
> b. If the next digit is < 5, do nothing to the first digit
>3. Drop all digits after the (possibly adjusted) first digit
>4. Keep leading zeros and decimal places intact
>
>That is probably exactly what you already said, but I needed to put it in my own way.
Yes, except that to be technically correct, in step 3 you can't "drop" digits unless they appear after the decimal point; rather, you change them to zero. In the examples, though, you applied the rule correctly.
>
>If the above is true, then are these correct?
>
>
> 4.008 * 2.09 ------> 4 * 2 = 8
>38.002 * 0.49 ------> 40 * .5 = 20
>61.203 * 0.42 ------> 60 * .4 = 24
> .98 * 7.61 ------> 1 * 8 = 8
> .098 * 0.15 ------> .1 * .2 = .02
>
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
