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SBA Math - Grade 7: Number Theory Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. How many odd numbers are there between 6 and 18?

Question 2 2. Which of these is NOT a prime number?

Question 3 3. What is the short way to write the greatest common factor?

Question 4 4. Find the GCF of 15 and 35.

Question 5 5. What is the prime factorization of 24 with exponents?

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Question 6 6. What is the least common multiple of 8 and 33?

Question 7 7. How many factors does a prime number have?

Question 8 8. Why is 57 a composite number?

Question 9 9. Which of the following is NOT a way to begin the factor tree for 1230?

Question 10 10. Which sequence of numbers below is a list of multiples?

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Question 11 11. What is the next odd number after 621?

Question 12 12. Why is 5 a prime number even though it ends in a 5?

Question 13 13. What is the prime factorization of 17?

Question 14 14. What is the next even number after 5,602?

Question 15 15. What is the greatest common factor between 9 and 18?

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Question 16 16. For which of the number pairs below could you NOT use the shortcut of simply multiplying the two numbers together to find the LCM?

Question 17 17. What is the least common multiple of 24 and 92?

Question 18 18. Find the GCF of 12 and 25.

Question 19 19. Find the GCF of 9 and 45.

Question 20 20. What is the least common multiple of 18 and 42?

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Question 21 21. What number can you divide a prime number evenly by besides itself?

Question 22 22. What is the prime factorization of 420?

Question 23 23. Is 4,775 odd or even?

Question 24 24. Which of these is a prime number?

Question 25 25. What is the prime factorization of 4050?

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Question 26 26. Which of the following numbers is not composite?

Question 27 27. What is the least common multiple between 5 and 15?

Question 28 28. Anna and Sarah are girl scouts out selling their cookies from door to door. Anna is able to earn $2 per door. Sarah is able to earn $5 per door. What is the smallest earnings that both Anna and Sarah will have in common?

Question 29 29. What is the sum of all the even numbers?

Question 30 30. Jake makes $10 dollars an hour and Judy makes $15 dollars an hour. What is the smallest check they can receive so that both their earnings match?

SBA Math - Grade 7: Number Theory Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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