Algebra 1A - 7th and 8th - Skills Review Packet Unit 0



1238250279400You may not use a calculator for Sections A and B!00You may not use a calculator for Sections A and B!Name ___________________________ Date__________________________ Section A: IntegersPerform the operation.1.?5 + 122.9 + (?11) 3.?3 + 13 4.?4 + (?16) 5.?3 + (?4) 6.14 + (?5) 7.?10 + (?15) 8.?13 + 9 9. 18 + (?18) 10.?25 + (?9)11.5 ? 8 12.?4 ? 6 13.?8 ? (?3) 14.10 – 715.?8 ? 13 16.15 ? (?2) 17.?9 ? (?13) 18.?7 ? (?8) 19. ?6 ? (?6) 20. ?10 ? 12 21. 8?(?5) 22.?1?(?12)23. ?5(10) 24. ?13(0) 25. ?9 ? 9 26. 15(?2)27. ?10?11 28. ?6?(?13) 29. 7(?14) 30. ?11?(?11)31. ?15/?532. 54/?933. ?33 ÷ 11 34.?49 ÷ (?7) 35.0 ÷ (?2) 36.60 ÷ (?6)37.?56/1438.18/0 39.65/?540.?84/-7Section B: Fraction and Decimal OperationsAdd, subtract, multiply, or divide. Show your work!41. 110+31042. 23+1543. 58-1344. 59-2545. 38?1246. 14÷1247. 545+32348. 434-11249. 114-1250. 21771551. 337÷852.312÷11353.112.5 + 24.5254. 5.7 – 4.81 55. 20 – 12.5 56. 3.02 ? 5.257. (1.2)(1.3)(1.4)58. 65.3 ÷ 1059. 3.42/0.36Section C: PercentsComplete the table with the missing values. FractionDecimalPercentExample 0.550%60.61..4562.72%63.64.1.265.5%66.67..868.73%69..00670. Of the students in your class, 12% are left-handed. What fraction of the students is left-handed?71. You delete 1/8 of the messages in your email inbox. What percent of the messages did you delete?72. You take a test that has 20 questions and you get 80% of the questions correct. How many questions did you get correct?73. You buy $50 worth of clothes. The sales tax is 8%. How much sales tax do you pay?74. You are buying a sweater that costs $54. It is on sale for 20% off the original price. What will be the sale price? Use the formula, I = Prt, where I = interest, P = principal, r = rate (as a decimal), and t = time (in years) to answer the questions #75 and #76. Show your work. 75. Calculate the amount of interest you would earn if you deposit $500 in a savings account that pays 6% interest over 10 years. 76. Calculate the amount of interest you would pay if you charge $200 on your credit card with 8.5% interest for 3 months. Section D: Ordering Numbers Order the numbers from least to greatest.77. 7, -4, -11, 0, 8, -1278. 0.5, 45, 0, 2, 20%, 0.22 Section E: Order of OperationsUse the order of operations to evaluate the expression. Show all your work. 79. 42 ÷ 2 + 3(9 – 5)80. [8 – (3 + 4 ÷ 2)] + 1281. 10÷5 ? 315+7 ? 382. 4(32 – 18) ÷ 2 Section F: Scientific NotationWrite the number in standard form.83. 1.32 × 10484. 6.5 × 10-385. 5.80 × 107 86. 9.1 × 10-5Write the number in scientific notation.87. 4,50088. .0083589. 4.7 90. 7,030,000 91. .032Section G: Ratios, Rates & ProportionsA ratio is a comparison of two quantities using division. ?, 3 to 4, 3 : 4A rate is a ratio of two quantities with A rate with a denominator of 1 is called different units.a unit rate. Example: 60 miles Example: 30 miles 2 hour 1 hourWrite the ratio as a fraction in simplest form. 92. 25 to 45 93. 63 : 28 94. 35 girls : 15 boys95. 2 feet : 8 feet 96. 16 dogs to 12 cats 97. 51 correct : 9 incorrectFind the unit rate.98. 180 miles in 3 hours 99. 256 miles per 8 gallons100. $9.60 for 4 pounds4194810147955101. The table shows nutritional information for three beverages.A. Which has the most calories per fluid ounce?B. Which has the least sodium per fluid ounce? Solve the proportion. 102. 103.104.105. ................
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