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Geometry

Geometry. Fun at every vertex. Order of operations. Decimals! Addition and Subtraction. 33.7-2.5=?. Line up the decimal points Perform the operation like normal. 33.7 2.5 31.2. Decimals! Multiplication. 33 . 7 x 2 . 5 1685 + 6740 84 . 25. 33.7x2.5=?.

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Geometry

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  1. Geometry Fun at every vertex

  2. Order of operations

  3. Decimals! Addition and Subtraction 33.7-2.5=? • Line up the decimal points • Perform the operation like normal • 33.7 • 2.5 • 31.2

  4. Decimals! Multiplication 33.7 x 2.5 1685 + 6740 84.25 33.7x2.5=? • Line up the decimal points • Perform the operation like normal • Count total number of decimal places (2) • Put decimal that many spaces from the right

  5. Decimals! Multiplication 10.5x3.1=? • Line up the decimal points • Perform the operation like normal • Count total number of decimal places • Put decimal that many spaces from the right

  6. Decimals! Multiplication • SHORTCUT!!! • Plug it into your calculator

  7. Decimals! division 10÷2.5=? • Set up the operation like normal • Move decimal so that it is at the end of the number. • Move the decimal for the other number the same • Divide normally

  8. Decimals! division • SHORTCUT!!! • Plug it into your calculator

  9. Practice • Practice by completing the following problems… • Only do 1-10!!!!!

  10. Stop!!!! • Check your answers • write down the number of correct answers at the top of your paper • Get with a partner (next to you) and compare your work • Correct your incorrect answers • Write down what mistake you made • If you got them all correct, explain it to your neighbor

  11. Practice Answers • 3.646 • 50.42 • 2.280 • 2.337 • 9.81 • 60.96 • 61.82 • 44.8 • 18.08 • 419.802

  12. Fractions! Addition and Subtraction • Find a common denominator • Perform the operation to the NUMERATORS only

  13. Fractions! multiplication • Multiply the NUMERATORS together • Multiply the DENOMENATORS together • Simplify (if possible)

  14. Fractions! division • Find the reciprocal of the second term • Multiply the first term by the reciprocal of the second term • Simplify (if possible)

  15. Practice • Practice by completing the following problems…

  16. Practice Answers • 44 1/3 • 16 75/88 • 1 268/285 • 2 31/70 • 26 17/70 • 1 11/117 • 54 2/13 • 6 29/30 • 1 29/363 • 1 97/128

  17. Solve some equations!

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