When a number is divided by a multiple of 10, simply move the decimal one position to the left for every zero. We can take each answer to find out which one is correct.
\(23 \div 100 = 0.23\) (move decimal 2 positions to the left)
\( 23 \div 1.000 = 0.023\) (move decimal 3 positions to the left)
23/10.000 = 0.0023 (move decimal 4 positions to the left)
\(23 \div 100.000 = 0.00023\) (move decimal 5 positions to the left)
Therefore, 0.23 converted to a fraction is \(\frac{\mathrm{23} }{\mathrm{100} } \)