枫叶国际学校入学测试数学模拟试题.docx

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. MATH PROFICIENCY TEST Name _________________________ Date _____________________ Record your answer on the answer sheet provided. 1. Simplify: (2x 4 y5) 9. Evaluate - 2a 3 b - 4a 4 for a= - 3 and b= - 2 a) 6x 12 y15 b) 2x 12 y15 c) 8x 64 y125 a) 432 b) - 432 c) - 128 d)144 e) - 144 d) 8x 12 y15 e) 8x 7 y8 4 - 3 10. Solve: 3x - 7 ≥ - 22 2. Rewrite using positive exponents only b) x ≤ - 28 ≥ - and a) x ≤ 5 5 c) - d) x 5 e) x evaluate the result. x ≤ ≥ 5 1 1 15 2x 7 3 a) 11. Solve: - = 64 b) - 3 4 1 = - 12 c) 43 =64 3 4 3 d) - 43 = - 64 e) 43 =12 - 3 d) x - a) x 18 b) x 18 c) x 3 e) x 3 1 12. Simplify: (4x 2 3 - 8xy+2y ) - (9x 4 - 4xy - 7y ) Evaluate: - a) - 5x - 4xy 49 - 5y b) 7 - 5x - 4xy + 9y 7 2 2 2 c ) - 5x + 12xy + 4y d) - 5x + 4xy + 9y a) 2 b) - 7 d) - - 49 e) - 5x - 12xy + 9y e) 2 7 4 Simplify and rewrite using only positive exponents: 13. How long is BC? - 2 4x 2 3 2y ( ) x 4 y 4y 1 a) 4 b)6 c) 6 d) e) y y6 4y x 6 x 6 4 2 a) 22x - 19x- 23 b) -16x +8x -5 c) 16x -8x - 5 d) 16x -24x+5 5. Write an algebraic equation for the following After 7 e) 16x -8x +5 is added to a number the sum is divided by4. The result is 12. 14. Simplify:( - 7a - 19c) - ( - 12a+30c) - ( - 21a - 11c) .页脚 . 7n n 7 a) 26a - 38c b) - 26a - 22c c) - 16a a) = 12 b) + 4 = 12 c) n + = 12 - 60c 4 7 4 d) 2a + 22c e) 26a + 38c n n + 7 d) + 7 12 12 15. When 6x y - 10x y is completely 4 = e) = factored, one 4 of the factors will be_____ 6. Solve for x given 4(3x - 7)= - 7 a) 3x - 5y b) 2xy c) 2xy a) 7 b) 0 c) 35 7 e) 35 d ) 3x - 5y e) 3x 6 - d) 4 12 - 5 12 16. Simplify: ( 2x 4 y ) (6x y ) 7. Solve for x given 4 - 2(3x - 4)=1 - (5x+4). a) 12x 12 y6 7y5 c) 12x 4y 3 b) 12x a) - 9 b) - 1 c) 15 d) 3 e) 7 d) 8x 12 y6 e) 8x 7y 5 8. What is the value of the expression - 3x 2 17. Simplify: 24x - 30x3 + +4x 6x - 6 when x= 5 ? 6x a) - 55 b) - 95 c) 50 d) 95 e) 55 a ) 4x 5 - 5x +x b) 4x 6 - 5x3 +1 c) 4x 5 - 5x +1 d ) 4x 5 - 5x e) 18x 5 - 36x Page 1 of 5 .页脚 . 18. When (4x - 1) (2x +7)

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