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Adding And Subtracting Whole Numbers

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Teaching how to add and subtract whole numbers.

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Adding And Subtracting Whole Numbers

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

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