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WARM UP! J AN. 25, 2013

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Q UESTION 1 A card is drawn from a deck of 52 cards. Find the probability of drawing a picture card, (includes jacks, queens, and kings.

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Q UESTION 2 Rotation Rules: State the rule for each, a. 180 degree rotation b. 90 degree clockwise rotation. c. 90 degree counter clockwise rotation.

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Q UESTION 3 A right triangle has legs with length of 5 inches and 12 inches. What is the area of a square drawn on the hypotenuse?

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Q UESTION 4 Dilations: In Math the word dilate means to _____________ or _________________ a figure. If a scale factor is less than 1 then your figure gets ____________. If a scale factor is greater than 1 then your figure gets ______________.

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T IME IS UP !!! Trade and Grade!

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ANSWERS 1. 3/13 2. a. change signs of both the x & y coordinate. b. Switch the coordinates of each point and then change the new 2 nd coordinate to the opposite sign. c. Switch the coordinates of each point and then change the new 1 st coordinate to the opposite sign sq inches 4. Enlarged or reduced Less than 1 your figure gets reduced. Greater then 1 your figure gets enlarged

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C RITICAL T HINKING 1 Subtracting UP! Can you figure out a way to take out 1 from 14 so that you end up with 15?

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ANSWER Use Roman Numerals: If you take away I from XIV you are left with XV or 15.

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C RITICAL T HINKING 2 A Clown-Undrum: Baron Chillarado the Clown earned 3 gold bricks after working an 8 th grade b-day party. While walking home he came to an old foot bridge. The sign said, “Weight Capacity 150 pounds.” Chillarado weighs 148 pounds & each brick weighs 1 pound. How did he get himself and all three bricks across safely?

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ANSWER He juggled the gold bricks as he walked. That way at least one was in the air at all times so only two bricks (2pds) and the Baron (148pds) had weight on the bridge at any given time.

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