Open Up - Grade 7 - Mathematics - Unit 8 - Lesson 5

What is the same about these two experiments? What is different?Selecting a letter at random from the word “ALABAMA”Selecting a letter at random from the word “LAMB”

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7.SP.6

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7.SP.7.b

Andre picks a block out of a bag 60 times and notes that 43 of them were green.Mai looks in the bag and sees that there are 6 blocks in the bag. Should Andre change his estimate based on this information?

• Yes he should change his estimate
• No he should not change his estimate

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7.SP.6

7.SP.5

7.SP.7.b

A person suspects a standard number cube is not so standard. He rolls it 100 times, and it lands on a six 40 times. Another person rolls this cube 100 times, and it lands on a six 42 times. A third person rolls the cube 100 times, and it lands on a six 33 times. Based on the results, is there evidence to help prove that this cube is not a standard number cube?

• Yes there is evidence this is not a 6 sided cube
• No there is a lack of evidence that this is not a 6 sided cube

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7.SP.6

7.SP.5

7.SP.7.b

A textbook has 428 pages numbered in order starting with 1. You flip to a random page in the book in a way that it is equally likely to stop at any of the pages.What is the sample space for this experiment?

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7.SP.6

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7.SP.7.b

A rectangular prism is cut along a diagonal on each face to create two triangular prisms. The distance between A and B is 5 inches. What is the surface area of the original rectangular prism?

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7.SP.6

7.SP.5

7.SP.7.b

A rectangular prism is cut along a diagonal on each face to create two triangular prisms. The distance between A and B is 5 inches. What is the total surface area of the two triangular prisms together?

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7.SP.6

7.SP.5

7.SP.7.b