NAME: 8th grade Math Benchmark 2 DATE
NAME: DATE:
8th grade Math Benchmark 2
31. Which is 63 64 in exponential form? A. 3612
B. 76 C. 612 D. 67
32. Which shows 9-3 in standard form? A. 729 B. 27
C.
1 27
D.
1 729
33. Which shows (116)2 in exponential form? A. 226 B. 1112 C. 118 D. 114
(8.EE.1) 34. Which shows 6-1 6-4 in exponential form? A. 6-5 B. 6-3 C. 61 D. 63
35. What is 0.000058 written in scientific notation? A. 5.8 x 10-6 B. 5.8 x 10-5 C. 5.8 x 105 D. 5.8 x 106
36. The area of Australia is approximately 7,700,000 square kilometers. What is the area written in scientific notation? A. 7.7 x 10-6 sq km B. 7.7 x 10-5 sq km C. 7.7 x 105 sq km D. 7.7 x 106 sq km
37. What is 650,000 written in scientific notation? A. 6.5 x 10-6 B. 6.5 x 10-5 C. 6.5 x 105 D. 6.5 x 106
38. Find the quotient. 2.89 10 2 3.4 10 2
A. 0.85 x 100
B. 0.85 x 104 C. 8.5 x 103 D. 8.5 x 105
39. Find the quotient. 5 10 2 1.25 10 2
A. 0.04 x 100
B. 0.04 x 104 C. 4.0 x 103 D. 4.0 x 104
40. Find the product. (1.9 x 103)(4.5 x 102) A. 8.55 x 101 B. 8.55 x 103 C. 8.55 x 105 D. 8.55 x 106
41. Solve by substitution.
x 2 y 2 y 2x 4 A. (
10 8 , ) 3 3
B. (-2, 0)
2 4 C. ( , ) 3 3
D. (0, 0)
42. Heidi paid $18 for 7 pairs of socks. She bought wool socks that cost $3 per pair and cotton socks that cost $2 per pair. How many pairs of socks did she buy? A. 2 pairs of wool and 5 pairs of cotton B. 3 pairs of wool and 4 pairs of cotton C. 4 pairs of wool and 3 pairs of cotton D. 5 pairs of wool and 2 pairs of cotton 43. Kaya and Tad started with the same number of baseball cards in their collections. Kaya collected 3 cards per week and now has 29 cards. Tad collected 2 cards per week and now has 20 cards. Let x represent the number of cards they begin with, and let y represent the number of weeks. Which system of equations represents this situation? x y 20 x 3y 20 A. C. 3x 2y 29 x 2y 29 B.
5y 49 x 20 29
44. Solve the system of linear equations. 1 y x 6 3 x 3y 18 A. (2,1) only B. (3,6) only C. no solution D. infinitely many solutions
45. Solve the system of linear equations. 3x 5y 4 x y 4 A. (1, -5) B. (0, -4) C. (-3, -1) D. (-5, 1)
D.
x 3y 29 x 2y 20
8th grade Math Benchmark 2
31. Which is 63 64 in exponential form? A. 3612
B. 76 C. 612 D. 67
32. Which shows 9-3 in standard form? A. 729 B. 27
C.
1 27
D.
1 729
33. Which shows (116)2 in exponential form? A. 226 B. 1112 C. 118 D. 114
(8.EE.1) 34. Which shows 6-1 6-4 in exponential form? A. 6-5 B. 6-3 C. 61 D. 63
35. What is 0.000058 written in scientific notation? A. 5.8 x 10-6 B. 5.8 x 10-5 C. 5.8 x 105 D. 5.8 x 106
36. The area of Australia is approximately 7,700,000 square kilometers. What is the area written in scientific notation? A. 7.7 x 10-6 sq km B. 7.7 x 10-5 sq km C. 7.7 x 105 sq km D. 7.7 x 106 sq km
37. What is 650,000 written in scientific notation? A. 6.5 x 10-6 B. 6.5 x 10-5 C. 6.5 x 105 D. 6.5 x 106
38. Find the quotient. 2.89 10 2 3.4 10 2
A. 0.85 x 100
B. 0.85 x 104 C. 8.5 x 103 D. 8.5 x 105
39. Find the quotient. 5 10 2 1.25 10 2
A. 0.04 x 100
B. 0.04 x 104 C. 4.0 x 103 D. 4.0 x 104
40. Find the product. (1.9 x 103)(4.5 x 102) A. 8.55 x 101 B. 8.55 x 103 C. 8.55 x 105 D. 8.55 x 106
41. Solve by substitution.
x 2 y 2 y 2x 4 A. (
10 8 , ) 3 3
B. (-2, 0)
2 4 C. ( , ) 3 3
D. (0, 0)
42. Heidi paid $18 for 7 pairs of socks. She bought wool socks that cost $3 per pair and cotton socks that cost $2 per pair. How many pairs of socks did she buy? A. 2 pairs of wool and 5 pairs of cotton B. 3 pairs of wool and 4 pairs of cotton C. 4 pairs of wool and 3 pairs of cotton D. 5 pairs of wool and 2 pairs of cotton 43. Kaya and Tad started with the same number of baseball cards in their collections. Kaya collected 3 cards per week and now has 29 cards. Tad collected 2 cards per week and now has 20 cards. Let x represent the number of cards they begin with, and let y represent the number of weeks. Which system of equations represents this situation? x y 20 x 3y 20 A. C. 3x 2y 29 x 2y 29 B.
5y 49 x 20 29
44. Solve the system of linear equations. 1 y x 6 3 x 3y 18 A. (2,1) only B. (3,6) only C. no solution D. infinitely many solutions
45. Solve the system of linear equations. 3x 5y 4 x y 4 A. (1, -5) B. (0, -4) C. (-3, -1) D. (-5, 1)
D.
x 3y 29 x 2y 20
