Practice Exam - Prime Numbers & Factors 1....

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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....
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Practice Exam - Prime Numbers & Factors 1....

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