Question

A stack of 50 cards is 1.9 cm thick .all cards in the stack have the same thickness.how thick is one card?show your work

Answer 1

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.