Question

Jamie downloaded 75.2 4GB of music onto her computer. The download took 3.8 hours. If the music downloaded at a constant rate, how many gigabytes of Music were downloaded in 1 hour? Use long division show your work.

Answer 1

To divide decimals using long division:

1. Convert the divisor into a interger: You multiply in this case dividend and divisor by 10):

$\frac{75.24\cdot10}{3.8\cdot10}=\frac{752.4}{38}$

2. Divide the first to digits of divident into divisor: How many times fits 38 in 75: 1 time (This is the first digit of the quotient)

3. Multiply 38 by 1 and susbtract that result from 75:

4. Put the next digit of the divident next to 37.

5. Divide 372 into 38 (how many times fits 38 in 372: 9 times) and repeat step 3 and 4 until you use the total of digits of dividend and a remainder of 0:

You put the decimal point in the quotient when you use the digit next to the decimal point in dividend.

Then, in 1 hour were downloaded 19.8GB