## 3.1 **Multiplication and Division Problem Solving**

Content to be learned• Solve word problems involving multiplication and division situations within 100.

• Use strategies to multiply and divide within 100.

• Know from memory products of two 1-digit numbers.

• Solve two-step word problems using the four operations.

• Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

• Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations.

• Represent problems using equations with a symbol/letter for the unknown.

• Use strategies to multiply and divide within 100.

• Know from memory products of two 1-digit numbers.

• Solve two-step word problems using the four operations.

• Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

• Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations.

• Represent problems using equations with a symbol/letter for the unknown.

## 3.2 **Measurement—Plane Figures: Area and Attributes**

Content to be learned

• Understand that a square with a side length of one unit is called “a unit square” and is said to have “one square unit” of area.

• Recognize area as an attribute of plane figures, consisting of square units.

• Understand that shapes in different categories may share attributes of subcategories.

• Understand that a square with a side length of one unit is called “a unit square” and is said to have “one square unit” of area.

• Recognize area as an attribute of plane figures, consisting of square units.

• Understand that shapes in different categories may share attributes of subcategories.

## 3.3 **Measurement—Area, Including Problem Solving**

Content to be learned

• Measure area by counting unit squares.

• Multiply side lengths to find areas of rectangles using real-world and mathematical problems.

• Solve problems in area using repeated addition.

• Find the area of a shape made up of two or more right-angle polygons (rectilinear polygon) by adding the individual areas of each polygon.

• Solve word problems using multiplication involving equal groups, arrays, and measurement quantities, including using a symbol for an unknown number.

• Measure area by counting unit squares.

• Multiply side lengths to find areas of rectangles using real-world and mathematical problems.

• Solve problems in area using repeated addition.

• Find the area of a shape made up of two or more right-angle polygons (rectilinear polygon) by adding the individual areas of each polygon.

• Solve word problems using multiplication involving equal groups, arrays, and measurement quantities, including using a symbol for an unknown number.