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Unformatted text preview: Prime Numbers & Factors 1. Which of the following are prime numbers and which are composite numbers ? 25, 7, 18, 29, 51 2. What prime numbers are factors of 36? 3. Which of the following are multiples of 3 ? 45, 53, 51, 39, 47 4. Find the prime factors of 27. Answers: 1. Prime: 7, 29 Composite: 25, 18, 51 2. 36 = 2 x 2 x 3 x 3 3. 45, 51, 39 4. 27 = 3 x 3 x 3 Order of Operations 1. 10 + 5 = (10) + (+5) = ? 2. Add 9, 16, and 25 3. 7 1  3 = (7) + (1) + (3) = ? 4. Add 22 and 13 Answers: 1. 5 2. 0 3. 11 4. 35 Multiply as indicated: 1. 5(8) = ? 2. 7(3) (2) = ? 3. 6(1)(4) = ? 4. 2(3)(4)(5)(6) = ? Answers: 1. 40 2. 42 3. 24 4. 720 Multiply and divide as indicated: Answers: 1. 3 2. 1 3. 2 4. 9 Distribution Fractions Solve: 1. What fraction of 1 foot is 11 inches? 2. Represent 3 out of 8 as a fraction. 3. Write the fractions that indicate the relationship of 2 to 3; 8 divided by 9; and 6 out of 7 equal parts 4. Answers: 1. 11/12 2. 3/8 3. 2/3; 8/9; 6/7 4. plus Using the divisions on a ruler for reference, complete the following exercise: Answers: 1. 2 2. 2 3. 12 4. 4 Supply the missing number in each of the following: Answers: 1. 80 2. 11 3. 27 4. 36 5. 6 6. 16 Reduce the following fractions to lowest terms: Answers: Change the following fractions to mixed numbers: 1. 31/20 2. 33/9 3. 65/20 4. 45/8 Answers : Change the following mixed numbers to improper fractions: Answers: Signs of Fractions...
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 Spring '11
 Espisito

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