Adding, Subtracting, Multiplying, and Dividing

Adding Decimals
 

Worksheet Objective:
To learn how to add decimals.

There are multiple worksheets that cover decimals. When you complete this one, be sure to move on to the next.

The Introduction to Decimals worksheet covered place values, converting decimals to fractions, converting fractions to decimals, comparing decimals, and rounding decimals.  If you are not familiar with these topics and have not yet done the first worksheet, you should probably go back to do it before you begin this worksheet. 


Adding decimals

To add decimals, first line them up with point under point.  Remember that any whole number is understood to have a decimal point at its right.


Example:  2.46 + 0.005 + 16 =

Step 1:  Line up point under point.  Notice the decimal point after the whole number 16.
                2.46
                0.005
            +16.____

Step 2:  Add the numbers.
                2.46
                0.005
            +16.____
              18.465

 

Try some:
1. 0.8 + 0.047 + 0.36 = 
2. 123 + 2.6 + 9.04 = 
3. 9.043 + 0.27 + 15 = 
4. 0.849 + 1.6 + 73 = 
5. 7.563 + 0.08 + 124.9 = 
6. 12.3 + 0.908 + 6 + 4.25 = 
7. 1.6 + 23 + 12.73 + 0.485 = 
8. .005 + 12 + 1.2389 =
9. 9.4 + 3.5 + 12.9007 =
10. 0.023 + 0.12 + 0.007 =


Here’s a website tutorial about adding and subtracting decimals:  http://www.math.com/school/subject1/lessons/S1U1L4GL.html

To create an adding decimals worksheet, go to one of these websites: 
http://www.aplusmath.com/Worksheets/DecimalAddition.html
http://www.superkids.com/aweb/tools/math/add/plus2.shtml



Resources:

Building Basic Skills in Mathematics. (1988). NTC/Contemporary Publishing Group, Inc.: Lincolnwood, IL.

Howett, Jerry. (2000). Number Power 2: A Real World Approach to Math. NTC/Contemporary Publishing Group, Inc.: Lincolnwood, IL.

Lassiter, Karen. (1993). Math Matters for Adults: Decimals and Percents. Steck-Vaughn Company: Austin, TX.