Read through the answers below. If you missed any questions, review this section and then try the additional practice. (NOTE: There are no detailed solutions to this practice.)

1. Complete the following addition problems.
1. 1.25 + .1 = 1.35
 Remember to line up the decimal points. Add zeros where one number does not have a digit (.1 = 0.10).

1. 100.55 + 52.62 = 153.17
 Notice that when you add the digits in the tenths place (5+ 6 = 11) you must carry a 1 to the ones place.

2. Complete the following subtraction problems.
1. 1.25 - .1 = 1.15
 Remember to line up the decimal points. Here you can also add zeros.

1. 115.55 - 111.62 = 3.93
 In this problem, we must borrow from the tens place so we can subtract the tenths place.

3. Complete the following multiplication problems.
1. 1.11 x 2 = 2.22
 When you are done, count out the decimal places. Here we have only 2 places for the 1.11, which means we have only two decimal places in our answer.

1. .255 x 1.5 = .3825
 When we multiply here we must carry numbers over (5x5=25, carry the 2). We have 3 decimal places for the .255 and one decimal place for the 1.5, giving us a total of 4 decimal places in our answer.

4. Complete the following division problems.
 First set up the traditional division equation. Shift the decimal point over the required number of places so the divisor is a whole number. Perform the division as usual. becomes:

 When we move the decimal point over two places so that the divisor of .25 is a whole number, the dividend still has a decimal. The decimal point in the answer is directly above the decimal point in the dividend. becomes:

If you still do not understand how to do these problems, you may need more review than is offered here. If so, contact your professor and ask where you can get further help.