一、Properties of integers 知道下列说法表示的内容

　　1. Integers consist of the whole numbers and their negatives (including zero).

　　2. Integers extend infinitely in both negative and positive directions.

　　3. Integers do not include fractions or decimals.

　　4. Negative integers

　　5. Positive integers

　　6. The integer zero is neither positive nor negative.

　　7. odd numbers(奇数)and even numbers(偶数)

　　8. Consecutive integers

　　9. Addition of integers(奇数偶数的加法规则)

　　10. Multiplication of integers(奇数偶数的乘法规则)

　　二、Arithmetic word problems(算术题)

　　三、Number lines(数轴)

　　四、Squarea and square roots(平方和平方根)

　　五、Fractions and rational numbers(分数与有理数)

　　六、Elementary number theory

　　☆Factors, multiples, and remainders

　　☆Prime numbers

　　七、Ratios, propertions, and percents

　　八、Sequences

　　九、Sets(union,intersection, elements)

　　十、Counting problems Counting problems involve figuring out how many ways you can select or arrange members of groups, such as letters of the alphabet, numbers or menu selections.

　　☆Fundamental counting problems 分步完成事件和分类完成事件发生的可能性

　　☆Permutations and combinations (排列组合)基本排列组合理论

　　十一、Logical reasoning The SAT doesn’t include 1.Tedious or long computations 2.Matrix operations

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