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# Bell Ringers

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1. Bell Ringers

2. BELL RINGER 9/13/10 Ratio of the Day (day 5) A. Day ____ out of 100 B. ___:___ C. /100  D. /100 = ._____ ______ = ____ ____ % E. Odd or even F. Prime or composite 1. List the common multiples for 6 and 8 2. List the common factors for 12 and 20 3. Define a prime number. 4. Define a composite number. 5. Prime factorize 24 Please write homework in agenda and leave open on desk for me to sign • Homework • Mon- Review sheet for 6.3 • Tues-Review sheet for 6.3 • Wed- Study for tomorrow’s quiz 6.3 • Thurs- pg 184 of text book (17-28)

3. BELL RINGER 9/14/10 Ratio of the Day (day 6) A. Day ____ out of 100 B. ___:___ C. /100  D. /100 = ._____ ______ = ____ ____ % E. Odd or even F. Prime or composite 1. List the LCM for 4 and 10 2. List the GCF for 16 and 40 • 3. List the LCM for 8and 3 • 4. List the GCF for 24 and 40 5. Prime factorize 34

4. BELL RINGER 9/15/10 • Ratio of the Day (day 7) • A. Day ____ out of 100 • B. ___:___ • C. /100  • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite • 1. List the LCM for 6 and 8 • 2. List the GCF for 32 and 35 • 3. List the LCM for 12 and 9 • 4. List the GCF for 42 and 60 • 5. Prime factorize 54

5. BELL RINGER 9/16/10 • Ratio of the Day (day 8) • A. Day ____ out of 100 • B. ___:___ • C. /100  • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite • 1. List the LCM for 5 and 12 • 2. List the GCF for 4and 7 • 3. List the LCM for 4 and 6 • 4. List the GCF for 48 and 12 • 5. Prime factorize 60

6. BELL RINGER 9/17/10 • Ratio of the Day (day 9) • A. Day ____ out of 100 • B. ___:___ • C. /100  • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite • 1. Is 567 divisible by 3? • 2. Is 2,016 divisible by 4? • Is 390 divisible by 6? • GCF for 48 and 100? • LCM for 4 and 14?

7. BELL RINGER 9/20/10 • Ratio of the Day (day 10) • A. Day ____ out of 100 • B. ___:___ • C. /100  • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite • 1. Which statement does NOT describe the number 2:  • A It is an even integer B It is the only even prime number • C It comes after 1 and before 3 D It is a composite number   • 2. Which number is equivalent to 40%? • F 0.04 H 4/10 • G ¼ J 40  • 3. What is a common multiple of 3 and 6?  • 4. Timothy is buying a rectangular rug that measures 5 feet by 2 feet. What is the area that the rug will cover? • F 10 sq ft H 14 sq ft • G 7 sq ft J 3 sq ft  • 5. What is the greatest common factor of 4 and 10?

8. BELL RINGER 9/21/10 • Ratio of the Day (day11) • A. Day ____ out of 100 • B. ___:___ • C. /100  • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite • 1. Which statement best describes a prime number: • A It is an even integer • B It is has only two factors, 1 and itself • C It has more than two factors • D It must be a odd integer   • 2. Which number is equivalent to 50%? • F 0.50 H 1/50 • G 1/5 J 50  • 3. What is the least common multiple of 3 and 6?  • 4. Tyreik is painting a wall that measures 6 feet by 4 feet. What is the area that he will paint? • F 12 sq ft H 20 sq ft • G 24 sq ft J 10 sq ft • 5. What is the greatest common factor of 6 and 10?

9. BELL RINGER 9/22/10 • Ratio of the Day (day 12) • A. Day ____ out of 100 • B. ___:___ • C. /100  • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite • 1. Which statement does NOT describe the number 1 :  • A It is a prime number • B It is a odd integer • C It is the smallest natural number • D When multiplied by another number, that number is the answer.   • 2. Which number is equivalent to 60%? • F 6.0 H 60/100 • G 1/6 J 60  • 3. What is a common multiple of 4 and 6?  • 4. Garrett is buying a rectangular rug that measures 8 feet by 7 feet. What is the area that the rug will cover? • F 30 sq ft H 56 sq ft • G 15 sq ft J 54 sq ft  • 5. What is the greatest common factor of 4 and 6?

10. BELL RINGER 9/23/10 • Ratio of the Day (day 13) • A. Day ____ out of 100 • B. ___:___ • C. /100  • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite • 1. Which statement best describes an integer:  • A Integers are the set of all whole numbers and their opposites. • B They are the “counting numbers” • C They are only negative numbers • D It must be a odd number   • 2. Which number is equivalent to 70%? • F 0.70 H 1/70 • G 1/7 J 70  • 3. What is the least common multiple of 7 and 3?  • 4. Caitlin is painting a wall that measures 8 feet by 6 feet. What is the area that he will paint? • F 48 sq ft H 14 sq ft • G 28 sq ft J 40 sq ft  • 5. What is the greatest common factor of 36 and 54?

11. BELL RINGER 9/24/10 • Ratio of the Day (day 14) • A. Day ____ out of 100 • B. ___:___ • C. /100  • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite • 1. Which statement best explains why the number 2 is prime?  • A) It is the first even natural number • B) It is divisible by 2 • C) It has only two factors, 1 and itself • D)It is a integer  • 2. Write the equivalent percent to the decimal 0.8 and the fraction 80/100 • 3. LCM to 9, 15, & 5. • 4. Gabriel is buying a rectangular rug that measures 3 feet by 9 feet. What is the area the rug will cover? • 5. What is the GCF of 42 & 56 ?

12. BELL RINGER 9/27/10 • Ratio of the Day (day 15) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite 1. What percent of the grid is shade? answer______________ • Write the equivalent fraction, in simplest form, for 75% answer_____________ • The picture below shows the number of stars Tony received from his teacher. What is the ratio of the number of striped stars to all stars? _________________ 4. Which group contains onlyprime numbers ? a. 1, 3, 4, 6 c. 6, 12, 15, 39 • 5, 13, 29, 43 d. 2, 10, 13, 23 5. What is the least common multiple of 12 and 30? a. 3 b. 6 c. 30 d. 60

13. BELL RINGER 9/28/10 • Ratio of the Day (day 16) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite 6. What represents the part of the 10-by-10 grid that is notshaded? answer_______________ 7. Write the equivalent percent to 3/5. answer________________________ • According to the table, what is the ratio of the number of • A’s and B’s Monte's earned to the total number of grades? a. 10:15 b. 15:23 c. 15:30 d. 10:23 Mont's Grades • Explain why the number 10 is a compositenumber. _________________________ 10.What is the greatest common factor of 20, 45, and 70? a. 20 b. 15 c. 10 d. 5

14. BELL RINGER 9/29/10 • Ratio of the Day (day 17) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite 11. Write 0.07 as a percent. ____________________________________ 12. If 3/4 of the students in Ms. Allen's class buy hot lunch, what percent do not buy hot lunch? 13. Kristen bought a 30 piece bag of mixed candy. 11 pieces were Hersey bars, 7 pieces were Snickers, and the rest were Butterfingers. What is the ratio of Snickers to total pieces of candy? _______________________________________________ 14. Explain why the number 20 is an evennumber 15. Which figure has a prime number of total units? a. b. c. d.

15. BELL RINGER 9/30/10 • Ratio of the Day (day 18) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite 16. On the last math test Amber answered 19 out of 25 questions correctly. Express her grade as a fraction, decimal and a percent. Write your fraction in simplest form 17. Which statement is true. a. 0.20 = 1/5 b. 0.25 = 2/5 c. 0.08 = 1/8 d. 0.35 = 3/5 18. There are 30 purple marbles and 150 pink marbles in a box. What is the ratio of pink marbles to purple marbles? • 180/30 • 30/80 • 150/30 • 30/150 19. Which list contains onlycommon factors of 12 and 36. a. 2,3,12,18 b. 2,3,6,12 c. 2,3,4,6 d. 6,12,18,36 20. Which group contains only compositenumbers? a. 11, 12, 13, and 14 b. 42, 43, 44, and 45 c. 7, 8, 9, and 10 • 25, 26, 27, and 28 • Assessment tomorrow!!!!!!!!!

16. BELL RINGER 10/1/10 • Ratio of the Day (day 19) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite Study this week’s Bell Ringers to prepare for assessment

17. BELL RINGER 10/4/10 • Ratio of the Day (day 20) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite  1. Which number is prime ? Explain why. A 2 B 14 C 16 D 77  2. Why is 21 considered a composite number? F It is a multiple of 100 G It has more than two factors H It has only two factors J It is odd  3. Football Fans in Math Class Cowboys5 Redskins 7 Titans 3 Panthers 4 Which of the following best shows the ratio of Cowboys fans to Redskins fans in Math class? Can you write it in all three forms? A 5:7 B 7:5 C 5:19 D 5:3 4. What is the unit rate of 96 homework assignments to 12 students?  5. Which number is equivalent to 40% F 0.04 G 2/5 H ¼ J 40.0

18. BELL RINGER 10/5/10 • Ratio of the Day (day 21) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite 6. Which is the best definition of a prime number? A It has more than two factors B It has exactly two factors, itself and 1. C It ends in 1 D It is an odd integer 7. Which list contains all composite numbers? F 4, 21, 51, 63, 81 G 2, 4, 6, 8, 10 H 3, 5, 7, 11, 13 J 1, 22, 45, 90, 54 8. From yesterday’s football fan chart, what is the ratio of Titans fans to the TOTAL amount of fans? A 3 to 16 B 3 to 19 C 16 to 3 D 19 to 3 Dawson has 3 goats and 5 dogs. Write the ratio of dogs to goats in three forms. 10. Which number is equivalent to 0.20? F 20% G 1/20 H 2/100 J 1/5

19. 11. Which is the great common factor of 12 and 18? A 6 B 3 C 9 D 36 12. Which are multiples of both 6 and 8? F 2 and 4 G 48 and 72 H 36 and 64 J 24 and 42  13. What is the ratio of girls to boys in your classroom today? (Count silently!!) 14. A teacher has 800 tissues and 20 students, what is the unit rate of tissues to students? 15. What percent of the shapes below are triangles? A 25 % B ¾ C 75% D ¼ • BELL RINGER 10/6/10 • Ratio of the Day (day 22) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite

20. 16. Identify the least common multiple of 3, 5 and 10. A 3 B 15 C 30 D 50  17. Which set of numbers is made up of all prime numbers? F 2, 3, 11, 23 G 10, 15, 16, 25 H 22, 24, 25, 30 J 40, 41, 44, 48 18. There are 14 History students and 9 Science students, what is the ratio of Science students to History students? A 14/9 B 9/14 C 9 to 23 D 23:9  • What is the ratio of circles to triangles below? 20. Write 2/5 as a percent and a decimal. • BELL RINGER 10/7/10 • Ratio of the Day (day 23) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite

21. BELL RINGER 10/8/10 • Ratio of the Day (day 24) • A. Day ____ out of 100 • B. ___:___ • C. /100  Simplify? • D. /100 = ._____ ______ = ____ ____ % • E. Odd or even F. Prime or composite Study this week’s Bell Ringers to prepare for assessment

22. Week of Oct 11th-Oct 15th • This week the Bell Ringer will be review of the Midpoint Exam which cannot be posted online. Do not use your Bell Ringer Books or the Ratio of the Day this week. I have a handout for each day and will collect it back each day.