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Adding and Subtracting Decimals

Adding and Subtracting Decimals. Essential Question:. How do I add and subtract decimals? Always line up decimals Add and subtract like you always do Bring decimal straight down in your answers. Adding. Examples: 4.55 + 11.3.

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Adding and Subtracting Decimals

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  1. Adding and Subtracting Decimals

  2. Essential Question: • How do I add and subtract decimals? • Always line up decimals • Add and subtract like you always do • Bring decimal straight down in your answers

  3. Adding Examples: 4.55 + 11.3 Put the first number on the top of the second number and line up the decimals. You can add a zero to help keep everything lined up When adding or subtracting you always start from the right and work left. 4.55 + 11.3 0 15.85

  4. 6.44 + 16 When there is not a decimal put one behind the number. Line up the decimal Add a zero to line up everything 6.44 + 16. 0 22.44

  5. Subtracting Examples: 5.34 -2.08 Put the first number on the top of the second number and line up the decimals. Different signs Take difference 5.34 -2.08 3.26

  6. 28 – 15.911 When there is not a decimal put one behind the number. Add zeros to line up everything, then subtract 7 9 9 28. -15.911 000 . 1 2 0 8 9

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