advertisement

Name Q1 Test 1 Review DUE: Thursday, 10/13/05 TEST: Friday, 10/14/05 ANSWERS IN BOLD TYPE Section 1: Sets of Numbers 1) Which number is a rational number but not an integer? a) – 6 b) 0 c) ⅝ d) none 2) Which number is an integer but not a natural number? a) π b) -¾ c) 0 d) none 3) Which number is an integer, but not rational? a) π b) 4 c) -.25 d) none 4) Which number is whole, but not natural? a) 0 b) 4 c) .75 d) none 5) Which number is natural, but not whole? a) ¼ b) 4 c) 0 d) none 6) Give an example of a number that is rational, but not an integer. C C D A D ½ 7) Give an example of a number that is an integer, but not a whole number. -3 8) Give an example of a number that is a whole number, but not a natural number. 0 9) Give an example of a number that is a whole number, but not an integer. NONE 10) Give an example of a number that is rational, but not a whole number. ¾ #’S 6,7, and 10 have more than 1 correct response. Section 2: Properties A. Complete the Matching Column (put the corresponding letter next to the number) A 1) 6-9=6-9 a) Reflexive J 2) 4(5 + 2) = 4(5) + 4(2) b) Additive Identity H 3) 17 · 8 = 8 · 17 c) Multiplicative identity D 4) 6 · (2 · 12) = (6 · 2) · 12 d) Associative Property of Mult. B 5) 32 + 0 = 32 e) Transitive F 6) 11 + (3 + 18) = (11 +3) + 18 f) Associative Property of Add. E 7) If 40 + 4 = 44 and 44 = 4 · 11, then 40 + 4 = 4 · 11 g) Symmetric I 8) 22 · 0 = 0 h) Commutative Property of Mult. G 9) If 30 = 5 · 6, then 5 · 6 = 30 i) Multiplicative property of zero Name Q1 Test 1 Review C 10) DUE: Thursday, 10/13/05 TEST: Friday, 10/14/05 26 · 1 = 26 j) Distributive Section 3: Operations with Signed Numbers Numbers 7-12 will be given in class (mixed numbers are very difficult to type!) 1) 76 + (-28)= 48 4) -51 – 64 = -115 2) -85 + (-23) = -108 5) 67 – (-74) = 141 3) –48 + 37 = -11 6) -101 – (-44) = -57 7) 8) 9) 10) 11) 12) Section 4: Order of Operations: 1) 256 – 46 · 3 – 11= 107 5) Substitute and Evaluate: 3y3 - 2y2 ÷ 10 + 379 = -1 y = -5 2) 24 ÷ (6 – 3 · 4) · 13 = -52 2 3) 100 - 12 · ¼ + (6)(-2) = 52 6) Substitute and Evaluate: b = 7 and c = -2 bc2 ÷ (42 – 4b) – 11c = 21 7) Evaluate when a = -8, b = -3, and c = 9 4b3 + ac – ab - 1 -205 = -41 2 c – 16b ÷ a + 8a + 2b 5 Section 5: Simplifying and Solving Equations 1) (6x - 5) + (7x + 7) 2) (6x2 – 5x + 7) + (9x2 – 4x + 8) 3) 4(3x – 5) + 6(4x + 3) 2 13x – 2 15x – 9x + 15 36x -2 4) 5(6x – 9) – 7(4x – 8) 5)8(3x2 – 4x + 9) + 6(4x2 + 5x – 12) 2x + 11 48x2 – 2x 2 2 6) 9(4x + 3x – 8) – 7(6x – 4x + 10) 7) 6(2x – 5) + 3(3x + 2) = 102 2 -6x + 55x -142 x=6 8) 5(5x – 6) = 6(3x + 2) 9) 63 – ¾ x = 27 x=6 x = 48 10) 10(3x + 1) – 6(7x + 2) = 4 11) 8(7x – 12) = 6(5x – 3) x= - ½ x=3