ACT數學考試的重點知識

　　數學是ACT測驗五大部門之一，這部門常識對付中國考生來講難度其實不大，然則只管如斯，考生在備考的時刻照樣要弄清晰哪些數學常識點是須要進修的測驗重點，本日留學ACT測驗頻道就為考生先容下ACT數學測驗的重點常識，供考生參考。

　　ACT數學測試題可歸納綜合為三大類：“算術/低級代數”，“中級代數/坐標多少”和“平面多少/三角學”。

　　算術/低級代數

　　算術(20-25%)：這部門的考題觸及的有整數、小數和分數的運算;數位值，平方根和類似值;指數的觀點;科學計數法;因數;比率，比例，百分比;一次方程式;絕對值及按值分列數字 ;根本計數辦法及簡略幾率;數據匯集，演示和推理;和簡略描寫性統計的懂得。

　　低級代數(15-20%)：指數的屬性寧靜方根，代數表達式的代入法，變量表達式，代數運算的懂得，二次方程式的因式分化。

　　中級代數/坐標多少

　　中級代數(15-20%)：對二次方程式公式的懂得，有理數和根的表達式，絕對值等式和不等式，序列，方程式組，二次不等式，函數，建模，矩陣，多項式的根和復數。

　　坐標多少(15-20%)：圖表，圖表與等式的幹系(個中包含點、線、多項式、圓和其他曲線);圖形與不等式;斜率，正交線，間隔，中點和圓錐。

　　平面多少/三角

　　平面多少(20-25%)：平面圖形的性子和幹系，個中包含了角度，平行線和正交線的幹系;圓的性子，三角形，矩形，平行四邊形和梯形; 轉化;證實的觀點和辦法;體積;立體多少的應用。

　　三角(5-10%)：直角三角形，三角函數的值和屬性，三角函數圖，三角函數建模，三角恒等式的應用和解三角等式。

　　Test Fact: ACT Math Concepts

　　Students constantly ask which math concepts are the most important to study, and luckily, we know the exact frequency of each concept tested on the ACT Math section! This data comes directly from the makers of the ACT and is true for every ACT Math section.

　　The ACT Math section can be broadly grouped into three different question types: Pre-Algebra/Elementary Algebra, Intermediate Algebra/Coordinate Geometry, and Plane Geometry/Trigonometry.

　　Pre-Algebra/Elementary Algebra

　　Pre-Algebra (20-25%). Questions in this content area are based on basic operations using whole numbers, decimals, fractions, and integers; place value; square roots and approximations; the concept of exponents; scientific notation; factors; ratio, proportion, and percent; linear equations in one variable; absolute value and ordering numbers by value; elementary counting techniques and simple probability; data collection, representation, and interpretation; and understanding simple descriptive statistics.

　　Elementary Algebra (15-20%). Questions in this content area are based on properties of exponents and square roots, evaluation of algebraic expressions through substitution, using variables to express functional relationships, understanding algebraic operations, and the solution of quadratic equations by factoring.

　　Intermediate Algebra/Coordinate Geometry

　　Intermediate Algebra (15-20%). Questions in this content area are based on an understanding of the quadratic formula, rational and radical expressions, absolute value equations and inequalities, sequences and patterns, systems of equations, quadratic inequalities, functions, modeling, matrices, roots of polynomials, and complex numbers.

　　Coordinate Geometry (15-20%). Questions in this content area are based on graphing and the relations between equations and graphs, including points, lines, polynomials, circles, and other curves; graphing inequalities; slope; parallel and perpendicular lines; distance; midpoints; and conics.

　　Plane Geometry/Trigonometry

　　Plane Geometry (20-25%). Questions in this content area are based on the properties and relations of plane figures, including angles and relations among perpendicular and parallel lines; properties of circles, triangles, rectangles, parallelograms, and trapezoids; transformations; the concept of proof and proof techniques; volume; and applications of geometry to three dimensions.

　　Trigonometry (5-10%). Questions in this content area are based on understanding trigonometric relations in right triangles; values and properties of trigonometric functions; graphing trigonometric functions; modeling using trigonometric functions; use of trigonometric identities; and solving trigonometric equations.

　　以上內容便是關於“ACT數學測驗的重點常識”的具體先容，願望能為考生的備考供給一些參考，更多ACT測驗出色內容盡在留學ACT測驗頻道，敬請考生連續存眷。