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**Multiplying and Dividing by 10,100,and 1,000(Contd)**

September 17,2013 Common Core Standard: Understand place value pattern can help you multiply and divide by powers of 10.

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Number Talk The drive from Oakland to Pinewood was a tricky one. I covered the uphill distance of 65 miles at 35 miles per hour. The return journey from Pinewood to Oakland was downhill, and I managed to drive at 63 miles per hour. What was my average speed for the entire journey?
(NCES)

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**Problem 60.014 X ____ = 600.14 34.12 X 100 =_____________**

8,231 ÷10,000= ___________

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Problem Solving A coral poly is a tubular saclike animal with a central mouth surrounded by a ring of tentacles. The size of polyp varies. If each polyp is 0.12 inch in diameter, how many polyps would fit in a row 12 inches long? If each polyp is 0.12 inch in diameter, how many polyps would fit in an area of coral reef that is 1 foot long by 1 foot wide?

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Problem Solving Suppose that one bacterial cell divides every 30 minutes to make 2 cells. Which expression will find how many cells there will be after 3 hours? A. 1 X 2 X 2 X 2 X 2 X 2 B. 2 X 30 C 2 X 2 X 30 D. 1 X2 X 2 X 2 X2 X 2 X 2

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X-box Factoring. X- Box 3-9 Product Sum -6 -27 Factor the x-box way Example: Factor 3x 2 -13x -10 -13 (3)(-10)= -30 -15 2 -10 -15x 2x 3x 2 x-5 3x +2.

X-box Factoring. X- Box 3-9 Product Sum -6 -27 Factor the x-box way Example: Factor 3x 2 -13x -10 -13 (3)(-10)= -30 -15 2 -10 -15x 2x 3x 2 x-5 3x +2.

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