• Chapter 2:  
    Multi-Digit Multiplication & Early Division
  • Overview
    Students continue to build multiplicative reasoning as they work with multi-digit multiplication and early division. In Module 1, students use base ten area pieces to investigate place value patterns, as well as model and solve single- and double-digit multiplication problems. In Module 2, they move from building multiplication arrays to sketching them. They also build ratio tables and use them to make generalizations about the effects of multiplying by 10, 100, and 1,000. In the third module, students solve a variety of multiplication story problems, and work together to compile and compare the strategies they have been practicing. In Module 4, students solve division problems that require them to make sense of remainders in a variety of contexts. New Work Places provide more practice with multiplication facts, multi-digit multiplication, and division with remainders.
     
     
    Skills Across the Grade Levels 

    The table that follows shows the major skills and concepts addressed in Unit 2. It is meant to provide a quick snapshot of the expectations for students’ learning during this unit, as well as information about how these skills are addressed in Bridges Grade 3, elsewhere in Grade 4 including Number Corner (NC), and also in Grade 5. 

     

    Major Skills/Concepts Addressed Gr. 3 Unit 2 Gr. 4 Elsewhere Gr. 5 

    4.OA.3 Solve multi-step story problems involving only whole numbers, using addition, subtraction, multiplication, and division 

    Supports 4.OA Solve single-step story problems involving division with remainders 

    4.NBT.1 Demonstrate an understanding that in a multidigit number, each digit represents ten times what it represents in the place to its right 

    4.NBT.5 Multiply a 2- or 3-digit whole number by a 1-digit whole number using strategies based on place value and the properties of operations 

    4.NBT.5 Multiply two 2-digit numbers using strategies based on place value and the properties of operations 

    4.NBT.5 Use equations or rectangular arrays to explain strategies for multiplying with multi-digit numbers 

    4.NBT.6 Divide a 2-digit number by a 1-digit number, with a remainder, using strategies based on place value, the properties of operations, or the relationship between multiplication and division

     4.NBT.6 Use equations or rectangular arrays to explain strategies for dividing a multi-digit number by a 1-digit number 

    4.MD.3 Apply the area formula for a rectangle to solve a problem

     
    *Retrieved on July 21, 2021 from http://bridges.mathlearningcenter.org/