Foundations of Algebra Midterm Review Name__________________________ Part 1. Perform the following operations for #s 1-25 WITHOUT a calculator. 1.) Simplify: 8 − (−7) − 3 2.) Simplify: 2(15 − 21) 3.) Simplify: 4.) Simplify: (6)(2) + (3)(−2)(−5) 5.) Simplify: 6.) Simplify: 7.) Simplify: 8.) Simplify: 9.) Simplify: |2| â |12| + −3|−10| 10.) Simplify: 55|4| + |−1 − 3| 11.) Simplify: 12.) Simplify: 2 â 32 ÷ 6 â 3 13.) Simplify: 5 − 2 + [6 â (10 + 2) − 2] 14.) Evaluate the expression 3xy - 4x + 10y for x = -1 and y = 5. 15.) Evaluate the expression xyz for x = 2, y = -3, and z = -9. −65 + 20đĨ + 3đĨ − 4 ( -2) ( -2) ( -2)( -2) 28 7 + 23 −15 3 21 + −7 120 ÷ (−6) − 6 + (−3) |53|−3 |−3|+|−2| 16.) Simplify: −4(−đĨ − 8) 17.) Combine Like Terms: −2đĨ + 5 − 9 + 9đĨ 18.) Write the number in words: 603 19.) Write the number in words: 3,409,587 Foundations of Algebra Midterm Review 20.) Write as a number: eight hundred nine thousand, five hundred seventy-one 21.) Write as a number: two hundred nine billion, four hundred eighty-five million, three hundred forty-eight thousand, seven hundred ninety-five 22.) Write as a decimal: ten and three hundred seventy-two thousandths 23.) Write as a decimal: twenty-four and two hundredths 24.) Simplify: |10 − 22| 25.) Simplify: -2 |−2 + 4 × 10| ____________________________________________________________________ Part 2. Perform the following operations for #s 26-95 WITH a calculator. 26.) Simplify: 22 + [2 + (1 – 2)3] 27.) Simplify: 16 ī 2 2 ī¸ 3 ī2 + (ī8) ī ī 28.) Simplify: 15 − [8 ÷ (6 + (−2))] 29.) Simplify: -4 [(2 - 9) + 32] 30.) Simplify: 2|3 − 10| + (−3)|6 − 3| 31.) Evaluate using the given values, x = 3, y = -5, z = 2: đĨ 2 − đĻ 3 − 2 32.) Evaluate using the given values, x = -2, y = 10, z = 1: −đĨ + 3đĻ + 4đ§ 2 33.) Evaluate using the given values, x = 5, y = -1, z = -3: 34.) Evaluate using the given values, x = 6, y = -2, z = -4: 35.) Solve: 16 − đĨ = 10 5đĨ−10 2đĻ−3đ§ đĻ−(4đ§+2) 10+đĨ−4đĻ Foundations of Algebra Midterm Review 2 3 3 4 đĨ− = 36.) Solve: 37.) Write the inequality of the graph below: 38.) Solve: -x + 2 > 6 īĻ2īļ Simplify: ī 6 ī ī§ īˇ ī¨3ī¸ 39.) 1 4 − â 5 7 40.) Simplify: -3x + x – 2y + 4x 41.) Simplify: 4y – 3(2x + 4) - 10 42.) Simplify: 4đĨ 2 +3đĨ13 43.) Solve the following inequality: x + 6 < -19 44.) Simplify the expression: −3(−đĨ + 3) − 4đĨ 45.) Simplify the expression: −2đĨ(3 + 4) − 8đĨ + 1 46.) Solve: 47.) Solve: 48. ) Add: 49.) Evaluate the expression if a = 5 and b = -2: |đ| − |−đ| 50.) Evaluate the expression if x = -5, y = 2 and z = -13: đĨ − đĻ + đ§ 51.) Compare: .625 ____ 5/8 52.) Compare: 1 3 10x = 65 đĨ 2 = 12 + 1 6 2 3 ______ .68 Foundations of Algebra Midterm Review 1 The area of a triangle is times base times height. What is the area of a triangle 2 1 2 measuring meters high by meters at the base? 4 3 53.) 54.) Simplify: 2(x - y) 55.) Order the values from greatest to least: 56.) Order the values from least to greatest: − 3 , −.335, − 4 , 34%, −1 57.) Compare: −|−5| _______ − 3 58.) Translate the verbal expression into an algebraic equation and solve: The sum of a number and fifteen is twenty-six. 59.) Translate the verbal expression into an algebraic equation and solve: The difference of a number and four is sixty-seven. 60.) Translate the verbal expression into an algebraic equation and solve: The product of a number and seven is twenty-eight. 61.) Translate the verbal expression into an algebraic equation and solve: The quotient of a number and four is twenty-five. 62.) Round to the nearest tens place: 324,204 63.) Round to the nearest hundredths place: 3487.8049 64.) Round to the nearest thousands place: 58,309,583.1938 65) John bought a pizza for $10.99 and a bottle of soda for $1.09. What is the BEST way to estimate the total cost of the purchase? 66.) Find the Least Common Multiple (LCM) of 6 and 24. 67.) Find the Least Common Multiple (LCM) of 4 and 14. 68.) Find the Least Common Multiple (LCM) of 5, 6, and 8. 69.) Add: 70.) Multiply: 17 4 , 35 8 1 , 4.24, 4 5 , 4.23Ė 1 1 3 1 1 4 5 + + 3 5 â 2 3 1 Foundations of Algebra Midterm Review 2 − 1 71.) Subtract: 72.) Divide: 73.) Solve: đĨ + 4 < 10 74.) Solve: −3đĨ > 15 75.) What is 3 raised to the fourth power? 76.) Which of the following equals 625? a) 55 b) 252 c) 53 77.) 3 4 4 ī2 ī¸ 3 5 d) 253 6 What is the value of a when a = -2? 78.) Which mathematical operation is performed on x and y to simplify the expression ax īˇ ay ? 79.) Simplify: (84 â 82 ) 80.) Simplify: 106 81.) 4 3 Which of the following is equivalent to 8a 5a ? 82.) 6 2 5 2 6 After the expression, 2a b c ī 5a b c is simplified, to what power is c raised? 83.) 84.) ( ) ī¨ īŠī¨ īŠ ī¨ īŠ is simplified? What is the value of the expression ī¨t īŠ when t = 3? 6 To what power is the 4 raised when 4 2 3 3 85.) When raising a power to a power, what operation is performed on the exponents? 86.) What operation is performed on the exponents to simplify the expression a 10 ? a4 5 29 What is the value of 27 ? 5 87.) 88.) Simplify: đ10 â đ15 Foundations of Algebra Midterm Review 89.) ī 3 x 15 y 8 When the expression is simplified, what is true about the exponent of x 2x8 y compared to the exponent of y? 90.) What is the value of (ī2) ī2 ? 91.) 2 ī7 What is x īˇ x when x = 2? 92.) What is true about any number raised to a zero power? 93.) How is the number 6,520,000 written using scientific notation? 94.) x If 0.00000000000249 = 2.49ī´10 , what is the value of x? 95.) 8 Which number correctly expresses 5.38 ī´10 in decimal notation?