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Math Warm-Up Week 7 Questions Wednesday

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1. Write the next 5 multiples of 9. 9, 18, 27,

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2. Which is greater? 12 x 5 or 8 x 9?

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3. List all the factors for 30.

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4. What is 30 x 9? Computation:

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5. What is 5 groups of 7?

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6. Which number is prime? 28 10 15 17

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7. Which of the following numbers is composite? 19 10 11 7

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8. Name two prime numbers between 10 and 15.

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9. Eleven is a prime number because…

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10. 30 is a composite number because…

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Get ready for the answers.

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1. Write the next 5 multiples of 9. 9, 18, 27, 36, 45, 54, 63, 72

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2. Which is greater? 12 x 5 or 8 x 9?

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3. List all the factors for 30. 30: 1, 2, 3, 5, 6, 10, 15, 30

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4. What is 30 x 9? Computation: **See the board.

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5. What is 5 groups of 7? 5 x 7= 35

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6. Which number is prime? 28 10 15 17

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7. Which of the following numbers is composite? 19 10 11 7

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8. Name two prime numbers between 10 and 15. 11 and 13

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9. Eleven is a prime number because… it only has 1 and itself as a factor.

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10. 30 is a composite number because… it has many factors such as 1x30, 2x15, 3x10, and 5x6.

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