Grade 8 Mathematics Midterm Assessment Semester 1 / 2021

Type your name, student number and class below: This examination consists of two parts:Part 1: A. Matching-Type (10 items) : 5 points B. Multiple-Choice (20 items): 10 pointsPart 2: A. Short Answer (10 items) : 5 points B. Data-Analysis (10 items) : 5 points C. Problem Solving (5 items) : 5 pointsTotal Examination Points: 30 points Part 1.A. Matching-Type. Divide the following expressions. (5 points) Drag to match or click and choose from the options. Simplify with NO NEGATIVE EXPONENTS Drag to match or click and choose from the options. B. Multiple-Choice. Click the letter of the correct answer. (20 points)1) Multiply : 8 × 84. 86 85 87 89 2) Multiply: 73 × 76 . 710 78 711 79 3) Find the product : 116b × 117b . 1113b 11-13b 1114b 1115b 4) Multiply: (-3)3 × (-3)2 × (-3)9 . (-3)13 (-3)20 (-3)14 (-3)17 5) Multiply c7a × c10a × c3a . c30b c20a c30a c30 6) Divide the following: 210 ÷ 28 . 8 10 12 4 7) Find the quotient of the following: 810 ÷ 88 . 64 14 9 78 8) Divide the following: 1717 ÷ 178 . 1710 178 179 1711 9) Find the quotient: 212 ÷ 29 . 210 23 25 26 10) Divide the following: (a - b)109 ÷ (a - b)76 . (a + b)100 (a - b)50 (a + b)25 (a - b)33 11) Add the following: 2ab + 3ab. 5ab 23ab 64ac 9bd 12) What is 5x2y + (-5x2y) ? -5 -5x2y 0 6 13) What is -15m5n + (-9m5n) ? 24m5n -24m5n 34m5n 30m5n 14) What is 5w9 + 4w9 + (-8w9) + 13w9 ? -15w9 16w9 23w9 14w9 15) Subtract: 5a2b - (-5a2b) . 10a2b 20a2b 30a2b 40a2b 16) What is 9abc - (-abc) ? 10abc 6abc Not possible, because they have different variables. -20abc 17) What is 5ab + 7ab -3xy ? -ab - 3xy 2ab + 3xy 12ab - 3xy -12cd + xy 18) What is (-6a - 11a) - (-5a + 9a) ? 23a -21a 34a 6a 19) What is 7x2 - 9x2 + 18x2 - 13x2 ? 10x2 12x2 14x2 3x2 20) Multiply the following: (3xy)(4x2y2) . 12x3y3 14xy 20x4y4 16x5y5 Part 2.A. Short Answer. Click the blank and choose from options. (5 points) 1) It literally means many terms. polynomials2) It is used as the shorthand way of writing multiplications of the same item several times. index3) It is any letters in the alphabet representing unknowns. variable4) It is a part of algebraic expression. monomial5) It is the number beside the variable. coefficient6) Degree of monomial is the sum of the indices of variables.7) To subtract two or more monomials, subtract the coefficients and keep the variables.8) To add two or more monomials, add the coefficients and keep the variables.9) When multiplying monomial by another monomial, first multiply the coefficients and then add the powers of the same variables.10) To divide monomial by a monomial, first divide the coefficients and then subtract the powers of the same variables. B. Data-Analysis. Click and choose from the options. (5 points) Monomial -3abc 5xy -35rst Binomial 4x + 8 9 - 3ab -8y + 11x Trinomial 6 + 2xy -3b x2 + 2x + 1 4x2 + 8x + 4 x2 + 5x + 6 C. Problem-Solving. Solve the following and choose the correct answer.1) A car travels at a speed 72 miles per day. How far will the car travel in 75 days? 710 miles 77 miles 73 days 78 days 2) There are 810 pieces of leaves in a forest and there are 86 leaves in a tree. How many trees are there? 86 trees 85 trees 83 trees 84 trees 3) The fuel tank of Mr. Lee's car has the dimensions a6 by 3b6 by 4b3. What is the volume of the fuel tank? 12a6b9 14a6b9 16ab 19abc 4) In a warehouse, each sack of rice weighs 42 kilograms. If there are 46 sacks in a crate, what is the total weight? 4-8 kg 47 kg 48 kg 58 kg 5) Lex can type a total of 98 words in 95 days. How many words can he type in a day? 93 words 917 words 92 words 103 words