Answer:
0.036 cm thick per card
Explanation:
As this is an advanced division problem, long division is really viable in this problem.
Step 1: You cannot divide 50 into both 1 and 9, so we will have to move to the hundredths place.
Step 2: 50 x 3 is 150, and that divided by one hundred is 1.50. As 1.90 - 1.50 is equal to 0.40, the digit in the hundredths place will be 3.
Step 3: 0.050 x 8 = 0.40, which places the 8 in the thousandths place.
The answer is 0.036 cm thick per card.