Unit 1: Integers Beginning to Meet the Learning Goal Name/Class: ______________________ Date: ____________ Practice Test Approaching the Learning Goal Meeting the Learning Goal Exceeding the Learning Goal* Key Concepts o Applies limited mastery of key concepts o Applies partial mastery of key concepts o Applies mastery of key concepts o Applies key concepts in ways that exceed expectations Knowledge + Skills (Meets all Grade 7 criteria and…) o Transfers knowledge and skills in limited ways to related situations and problems o Transfers knowledge and skills in partial ways to related situations and problems o Transfers knowledge and skills clearly to related situations and problems o Transfers knowledge and skills to related situations and problems in ways that exceed expectations Learning Goal LG 1.1: Use order of operations to add, subtract, multiply, and divide integers LG 1.2: Convert between standard form and scientific notation Beginning Approaching Meeting Exceeding* BG AG MG EG BG AG MG EG Process: Shows clear steps/strategies and has limited computational errors Process Beginning Approaching o Unclear steps shown towards a solution o Most steps shown towards a solution o Significant computation errors o Some computation errors Meeting o Complete and clear steps shown towards a solution o Limited computation errors Exceeding* o Systematic steps shown towards the solution of complex problems o Limited computation errors Problem Solving: Identifies relevant information in a problem and uses appropriate strategies to solve a problem. Problem Solving Beginning o Applies limited concepts towards problem solving everyday situations Approaching o Applies most concepts towards problem solving everyday situations Meeting o Successfully applies concepts towards problem solving everyday situations Exceeding* o Efficiently and effectively applies concepts towards problem solving complex situations o GREEN Write a variable expression for each word phrase. 1) The number of eggs in m dozen 2) Paul has a mass of 43 kg. Write an expression that gives Paul’s mass after he has gained x kilograms 3) Nine more than the quotient of four and p BLUE Write a variable expression for each word phrase. 1) 5 less than the quotient of 10 and the product of 2 and a number. 2) Seven more than the square of a number y divided by 2 For problem 3, use the following information: Terry is at a point 3 km from home. He starts 1 riding his bike at km per minute toward home. Terry rides for x minutes. 4 3a) Write an expression for the number of kilometers he has ridden. 3b) Write an expression for the number of kilometers he is away from home. 3c) How far is he from home after 8 minutes? GREEN Simplify the expression. Show all of your steps. 4) 50 – 5 • 7 + 8 5) 5 + [2 • (45 ÷ 9) – 3] GREEN (continued) Evaluate when a = 6, b = -8 and c = 3: 6) 3a - 4b + 2c b ¸ (-2) 7) ac – (a + c) 8) b-c BLUE 4) Insert an operation symbol for addition, subtraction, multiplication, or division in each blank to make the statement true. 60___(4___6)___5___3 = 65 Simplify the expression. Show all of your steps. 400 - 9(18 -13)2 5) 7 6) 3[15 – (23 – 6)2] 8) Evaluate the expression when a = -7 and b = 8. b (a ) é3 (17 - 9 )2 ùú ë4 û 7) 14 ¸ ê GREEN 9) Your friend said that the value of the expression 27 - 3 4 + 5 = 101. Explain your friend’s error. What is the actual value? 10a) A tree grows 5 cm each year. Write an expression for the tree’s height after x years. 10b) When the tree is 36 years old, how tall will it be? BLUE 9) In the statement, a and b are nonzero integers. Explain what must be true about the values of a and b. Give examples to back up your reasoning. a b a b 10) The variables a and b are integers. Tell whether the value of the expression is positive, negative or could be either under the given conditions. Explain how you know. b a given that ba GREEN 11a) Order the integers from least to greatest. BLUE 11) Order the integers from least to greatest. -|-9|, 0 , 9 ,|2|,-3,|-5| −|23|, −|18|, −|−21|, 27, −17, −(−19) GREEN and BLUE Compare. Use < ,> or = to complete each statement. 28 7 30 9 12) 8 13) 2 14) 9 10 15 5 Complete each sentence with a word or words that make it true. 15) A _________________________ is a letter that stands for a number. 16) ______________________ are whole numbers and their opposites. 17) A number’s distance from zero on the number line is called its ____________________. GREEN 18) A shopkeeper sold nine games for $3 each and four books for $18 each. Circle the expression that gives the sales total. Explain your choice. A. (9 + 3) • (4 + 18) B. 9 • 3 + 4 • 18 C. (9 • 3)(4 • 18) D. 9 • (3 + 18) 19) A helicopter is flying 80 meters above ground level. It rises 30m, falls 45m, rises 20m, falls 10m, rises 15m, and then falls 12m. How far above or below its original position is it now? BLUE 18) List the integers that can replace x to make the following statement true: 2 < x < 7 BLUE (continued) 19) Tell whether x is a positive integer or a negative integer. Explain how you know. x x GREEN and BLUE Write the numbers in Scientific Notation. 20) The time it takes for light to travel one meter is 0.000000000334 seconds. 21) The distance from earth to the star Vega is 239,000,000,000,000,000 meters. GREEN Write the number in Standard Form. 22) 3.41´10 7 23) 4.05 ´10-4 24) The most distant photograph of Earth was taken by the spacecraft Voyager I on February 4, 1990. Its camera took pictures of Earth from a distance of 6,500,000,000 kilometers. Write the distance in Scientific Notation. BLUE Rewrite in Standard Form. Then complete the statement using < , > , 𝒐𝒓 =. 22) 4.8 x 10-5 ______ 4.8 x 10-8 23) 1.08 x 106______ 1.09 x 107 24) The speed of light is approximately 3 x 108 m/s. Record your answers in Scientific Notation. a) How far does light travel in 6.0 x 101 seconds? b) How far does light travel in 1 day? c) How long would it take light to travel from our sun to Pluto, if Pluto is 5.9 billion km away?