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Function tables and Unknowns October 30, 2013

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Vocabulary Equation- a number sentence that contains an equal sign, showing that all parts are equal Solve- to solve an equation means to find the value of the variable so the sentence is true. Solution-the value of the variable that makes the sentence true. Variable- a letter that holds the place of an unknown number

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Addition and Subtraction X +3 =7 d- 6 =8 B-1=13 C +13 =19

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Word problems A box contained some snack bars. Sergio ate 4 snack bars. Now there are 8 snack bars left. How many snack bars were there at the beginning?

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Fabian bought 2 comic books. Now he has 11 books in all. How many comic books did Fabian have to start with?

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In one season, the Texas A&M womens volleyball team won 16 games. If they played a total of 30 games that season, how many games did they lose?

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JOURNAL ENTRY Why do we need to know what unknowns are? How are they useful in every day life?

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