Answer:
6.00, based on a couple of assumptions.
Explanation:
4 x 6 = 24
2 x 2 = 4
24/4 = 6.00
I rounded the two top numbers to the nearest whole number to make multiplication easy: 4 x 6 = 24. I know this is slight larger than the actual value, by (0.17)*(0.04) or less than 0.007, Close enough to start.
Round the denominator to 2: 2x2 = 4
24/6 = 4.00 I don't know for sure this is correct to 3 sig figs, but I don't know how else one can do this without a calculator.