-
The product of 0.5 x 0.92 is: \[ 0.5 \times 0.92 = 0.46 \]
-
The expression 4.321 × 2.3 is: \[ 4.321 \times 2.3 = 9.9 \] (Note that your options don't include 9.9, however, the answer in standard computation is 9.9, and you might want to check the multiplication or the possible answers again.)
Please confirm if you need any further calculations!