Addition & Subtraction of Decimal Numbers

 

Objectives:

 

        To develop an understanding of what addition is and how to add decimal numbers;

        To develop an understanding of what subtraction is and how to subtract decimal numbers;

        To practice decimal addition problems;

        To practice decimal subtraction problems;

        To become skillful in doing addition and subtraction decimal problems as needed for the GED or other educational goals.

 

Outcomes:

 

        To correctly complete a decimal addition worksheet

        To correctly complete a decimal subtraction worksheet

 

Warm-Up:

 

Click here http://www.mathbuilder.com/cgi-bin/m.cgi?FT=2&F=SIX26 to create a worksheet on addition and subtraction of decimal problems.  If you complete less than 34 correctly on the worksheet, go to New Instruction.

 

New Instruction:

 

To develop an understanding of addition and subtraction of decimal numbers, click here http://www.math.com/school/subject1/lessons/S1U1L4GL.html.  Do Step 1 through Step 4.  

 

Feedback and Review:

1.  To practice your addition decimal problems, click here http://www.aplusmath.com/Worksheets/OnlineDecimalAddition.html

            Select:  3 by 3, 20 problems, and Horizontal.   Complete the worksheet with a score of 90% correct.

 

2.  To practice your subtraction decimal problems, click here http://www.aplusmath.com/Worksheets/OnlineDecimalSubtraction.html.  Select:  3 by 3, 20 problems, and Horizontal.   Complete the worksheet with a score of 90% correct.

Transfer of Knowledge or Skills:

 

1.  Click here http://www.mathbuilder.com/cgi-bin/m.cgi?FT=2&F=SIX26 to create a worksheet on addition and subtraction of decimal problems.   If you complete less than 34 correctly on the worksheet, go to the following:

        New Instruction

o       Activity http://www.math.com/school/subject1/lessons/S1U1L4GL.html or

        Feedback and Review

o       Activity 1 http://www.aplusmath.com/Worksheets/OnlineDecimalAddition.html or

o       Activity 2 http://www.aplusmath.com/Worksheets/OnlineDecimalSubtraction.html

 

 2.  When you have successfully completed this activity, go back to the math home page.

 

 

Click here F to return to Math Homepage.