Math 4.3

Number and operations. The student applies mathematical process standards to represent and generate fractions to solve problems. The student is expected to:

• （1）代表一个分数A/B作为分数1/B的总和，其中A和B为全数和B> 0，包括A> B时；
  • （a）使用混凝土和绘画模型和具有符号表示的结果记录结果，以多种方式将分数分解为具有相同分母的分数之和；
  • (B) determine if two given fractions are equivalent using a variety of methods;
  • (C) compare two fractions with different numerators and different denominators and represent the comparison using the symbols >, =, or <;
  • （d）使用对象和图形模型来代表和求解与均等分母的分数的添加和减法，这些模型构建到数字行和操作的属性；
  • (E) evaluate the reasonableness of sums and differences of fractions using benchmark fractions 0, 1/4, 1/2, 3/4, and 1, referring to the same whole; and
  • (F) represent fractions and decimals to the tenths or hundredths as distances from zero on a number line.