Question

divide.
39.9 ÷ 1000

Explanation:

Step1: Divide by shifting decimal left

Dividing a number by 1000 moves its decimal point 3 places to the left. For 39.9, we add leading zeros as needed to complete the 3 shifts.
$39.9
ightarrow 3.99$ (1 shift), $
ightarrow 0.399$ (2 shifts), $
ightarrow 0.0399$ (3 shifts)

Answer:

0.0399