I apologize for falling behind on my blog posts. This week has been busy and I am just now getting a chance to update on what we have been working on in class.
Students will be taking their Unit 5 test next Thursday. The test will cover everything we have worked on over the last 2 weeks. Below is the study guide that I prepared for students. Test questions will be very similar to the questions on the study guide.
Today in class, students will be working on their study guide, as well as answering a few questions to prepare for next week's student lead conferences. Questions will give students an opportunity to reflect on the 2nd 9 weeks and write about what they did well and where they could use improvement. More information on student lead conferences will go home with students soon. I will post information on my blog as well.
Vocabulary Unit 5 Study Guide
Factor:
Divisible:
Prime:
Composite:
Prime Factorization:
GCF:
LCM:
Divisibility Rules
Tell if each number is divisible by…2, 3, 4, 5, 6, 9, 10
1.) 112 2.) 305 3.) 46 4.) 53
Factoring
List the factor pairs of the following, and label prime or composite
5.) 64 6.) 110 7.) 47 8.) 96
Prime Factorization
Draw a factor tree for the following numbers and write in prime factorization (exponential form)
9.) 220 10.) 500
Greatest Common Factor
Find the GCF of the following numbers
11.) 12, 36, 66 12.) 43, 50, 100 13.) 300 and 450
Least Common Multiple
Find the LCM for the following numbers
14.) 3, 10, 15 15.) 2, 7, 12 16.) 8, 25 17.) 3, 4, 9
Unit 5 Study Guide
Word Problems
18.) If a composite number has the first four prime numbers as factors, what is the smallest number it could be?
19.) What prime numbers are factors of both 84 and 112?
20.) What is the least common multiple of 3, 9, and 12?
21.) A green light flashes every 5 seconds. A red light flashes every 7 seconds. How long will it take before they both flash at the same time?
22.) What are the prime factors of 32?
23.) Which number is the same as 5^6?
a. 30 b. 17,834 c. 11 d. 15,625
24.) Explain why 17 is a prime number
25.) A number less than 100 is divisible by both 10 and 12. Name 2 other factors of this number
