Find out the cost of the following school supplies:

1. How much will you pay to buy the school supplies?

2. How did you get the answer in number 1?

3. If you give the cashier a ₱200-bill, how much change will you get?

For the second question

To find out how much more milk Sachi drank than Lianne did, I will subtract 0.312 from 0.347.

To subtract the decimals, I will use column subtraction. I will align the decimal points and the digits that belong to the same place value position. Next, I will subtract the digits starting from the right, just like subtracting whole numbers. So, I will subtract the thousandths digits, then the hundredths digits, and finally the tenths digits. I will also put the decimal point. Hence,

Example 5: Solve the problem: