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## Geometry

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**Geometry**Fun at every vertex**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=? • 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**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**Decimals! Multiplication**• SHORTCUT!!! • Plug it into your calculator**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**Decimals! division**• SHORTCUT!!! • Plug it into your calculator**Practice**• Practice by completing the following problems… • Only do 1-10!!!!!**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**Practice Answers**• 3.646 • 50.42 • 2.280 • 2.337 • 9.81 • 60.96 • 61.82 • 44.8 • 18.08 • 419.802**Fractions! Addition and Subtraction**• Find a common denominator • Perform the operation to the NUMERATORS only**Fractions! multiplication**• Multiply the NUMERATORS together • Multiply the DENOMENATORS together • Simplify (if possible)**Fractions! division**• Find the reciprocal of the second term • Multiply the first term by the reciprocal of the second term • Simplify (if possible)**Practice**• Practice by completing the following problems…**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