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Autumn Myst

Autumn Myst. Your Subtitle Goes Here. Add, Subtract and Compare. Suppose you go to a store and purchase a $23 item and a $7 item. What would you say if the clerk added the items this way? Would you pay $93? Of course not!. Place Value. The numbers were not lined up correctly.

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Autumn Myst

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  1. Autumn Myst Your Subtitle Goes Here

  2. Add, Subtract and Compare • Suppose you go to a store and purchase a $23 item and a $7 item. • What would you say if the clerk added the items this way? • Would you pay $93? • Of course not!

  3. Place Value • The numbers were not lined up correctly. • The 7 should be in the one's place. • When adding, ones should be added to ones, tens to tens, and hundreds to hundreds. • The same is true for tenths, hundredths, and thousandths.

  4. To insure that like place values are added, line up the decimal first

  5. Follow the example: 2.3 + 4 + 5.023 • Even whole numbers have a decimal. • The 4 has a decimal after it.2.3 + 4. + 5.023 • Line up the decimal • Fill in zeros

  6. Subtraction • Line up the decimal • Fill in Zeros • Put the larger number on top

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