1. Find all the factors for each number. If a number is a prime number, write “prime” next to it.
   1. 4                                                                                      
   2. 10                                                                                    
   3. 21                                                                                    
   4. 6                                                                                     
   5. 2                                                                                     
   6. 16                                                                                   
2. Find the factors, common factors and the Greatest Common Factor (GCF).
   

   Factors Activity

   	Factors	Common Factors	GCF
   [latex]\dfrac{2}{8}[/latex]	Numerator: Denominator:
   [latex]\dfrac{8}{16}[/latex]	Numerator: Denominator:
   [latex]\dfrac{24}{32}[/latex]	Numerator: Denominator:
   [latex]\dfrac{9}{12}[/latex]	Numerator: Denominator:
   [latex]\dfrac{5}{15}[/latex]	Numerator: Denominator:
   [latex]\dfrac{25}{30}[/latex]	Numerator: Denominator:
   [latex]\dfrac{4}{12}[/latex]	Numerator: Denominator:

3. Express each fraction in lowest terms. Remember: be sure to write the greatest common factor (GCF) you are dividing with.
   1. [latex]\dfrac{6}{9}=[/latex]
   2. [latex]\dfrac{6}{18}=[/latex]
   3. [latex]\dfrac{12}{28}=[/latex]
   4. [latex]\dfrac{15}{30}=[/latex]
   5. [latex]\dfrac{4}{24}=[/latex]
   6. [latex]\dfrac{10}{18}=[/latex]
4. Circle the fractions that are in lowest terms.
   1. [latex]\dfrac{1}{2}[/latex]
   2. [latex]\dfrac{3}{6}[/latex]
   3. [latex]\dfrac{4}{5}[/latex]
   4. [latex]\dfrac{3}{9}[/latex]
   5. [latex]\dfrac{4}{8}[/latex]
   6. [latex]\dfrac{5}{10}[/latex]
5. Find all the fractions that are not already in lowest terms and reduce them. Write “lowest terms” next to those already reduced.
   1. [latex]\dfrac{4}{8}=[/latex]
   2. [latex]\dfrac{2}{5}=[/latex]
   3. [latex]\dfrac{8}{12}=[/latex]
   4. [latex]\dfrac{15}{35}=[/latex]
   5. [latex]\dfrac{42}{80}=[/latex]
   6. [latex]\dfrac{6}{36}=[/latex]
   7. [latex]\dfrac{9}{15}=[/latex]
6. Indicate if each pair of fractions is equivalent (=) or not equivalent (≠).
   1. [latex]\dfrac{4}{5}\phantom{=}\dfrac{7}{8}[/latex]
   2. [latex]\dfrac{10}{12}\phantom{=}\dfrac{5}{6}[/latex]
   3. [latex]\dfrac{5}{15}\phantom{=}\dfrac{1}{3}[/latex]
   4. [latex]\dfrac{6}{7}\phantom{=}\dfrac{36}{41}[/latex]
   5. [latex]\dfrac{3}{5}\phantom{=}\dfrac{15}{25}[/latex]
7. Round to the nearest whole number
   1. [latex]1\dfrac{1}{4}=[/latex]
   2. [latex]4\dfrac{3}{4}=[/latex]
   3. [latex]6\dfrac{4}{5}=[/latex]
   4. [latex]3\dfrac{1}{4}=[/latex]
   5. [latex]12\dfrac{8}{9}=[/latex]

Answers to Unit 2 Review

1. Find all the factors for each number, some of the numbers are prime numbers, write “prime” next to it.
   1. 1, 2, 4
   2. 1, 2, 5, 10
   3. 1, 3, 7, 21
   4. 1, 2, 3, 6
   5. 1, 2, prime
   6. 1, 2, 4, 8, 16
2. Find the factors, common factors and the Greatest Common Factor (GCF).
   

   Greatest Common Factors (GCF)

   	Factors	Common Factors	GCF
   [latex]\dfrac{2}{8}[/latex]	Numerator: 1, 2 Denominator: 1, 2, 4, 8	1, 2	2
   [latex]\dfrac{8}{16}[/latex]	Numerator: 1, 2, 4, 8 Denominator: 1, 2, 4, 8, 16	2, 4, 8	8
   [latex]\dfrac{24}{32}[/latex]	Numerator: 1, 2, 3, 4, 6, 8, 12, 24 Denominator: 1, 2, 4, 8, 16, 32	2, 4, 8	8
   [latex]\dfrac{9}{12}[/latex]	Numerator: 1, 3, 9 Denominator: 1, 2, 3, 4, 6, 12	3	3
   [latex]\dfrac{5}{15}[/latex]	Numerator: 1, 5 Denominator: 1, 3, 5, 15	5	5
   [latex]\dfrac{25}{30}[/latex]	Numerator: 1, 5, 25 Denominator: 1, 2, 3, 5, 6, 10, 15, 30	5	5
   [latex]\dfrac{4}{12}[/latex]	Numerator: 1, 2, 4 Denominator: 1, 2, 3, 4, 6, 12	24	4

3. Express each fraction in lowest terms. Remember: be sure to write the GCF you are dividing with.
   1. [latex]\dfrac{2}{3}[/latex]
   2. [latex]\dfrac{1}{3}[/latex]
   3. [latex]\dfrac{3}{7}[/latex]
   4. [latex]\dfrac{1}{2}[/latex]
   5. [latex]\dfrac{1}{6}[/latex]
   6. [latex]\dfrac{5}{9}[/latex]
4. Circle the fractions that are in lowest terms: [latex]\dfrac{1}{2}, \dfrac{4}{5}[/latex]
5. Find all the fractions that are not already in lowest terms and reduce them. Write “lowest terms” next to those already reduced.
   1. [latex]\dfrac{1}{2}[/latex]
   2. lowest terms
   3. [latex]\dfrac{2}{3}[/latex]
   4. [latex]\dfrac{3}{7}[/latex]
   5. [latex]\dfrac{21}{40}[/latex]
   6. [latex]\dfrac{1}{6}[/latex]
   7. [latex]\dfrac{3}{5}[/latex]
6. State if each pair of fractions is equivalent (=) or not equivalent (≠).
   1. ≠
   2. =
   3. =
   4. ≠
   5. =
7. Round to the nearest whole number.
   1. 1
   2. 5
   3. 7
   4. 3
   5. 13