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.