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# Adding And Subtracting Whole Numbers

## by gusma1am on Oct 12, 2009

• 6,309 views

Teaching how to add and subtract whole numbers.

Teaching how to add and subtract whole numbers.

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## Adding And Subtracting Whole NumbersPresentation Transcript

• Adding and Subtracting Whole Numbers
By Angela Gusmano
• First, you need to know…
When: (a + b) + c = a + (b + c)
When: a + b= b + a
When: a + 0= a
• 4,285+ 124
• Let’s Try Some!
1
1
1
4,285
+ 124
4,409
2,402
+1,789
4,191
• More Practice!
1
1
1
1
5,765
+ 6,341
12,106
1,891
+ 298
2,189
• Subtraction
• 4,987- 2,158
• Let’s Try Some!
2
12
17
7
4,987
- 2,158
3,230
- 320
1,910
2,829
• More Practice!
1
12
4
12
8
10
9,222
- 6,180
5,290
- 1,488
3,802
3,042
• Now you should be able to add and subtract whole numbers!
• Sources
http://michigan.gov/documents/MathGLCE_140486_7.pdf
http://www.eduplace.com/math/mw/g_4.html