• Chapter 4:
    Addition, Subtraction & Measurement 
  • Overview 

    In this unit, students study addition, subtraction, and measurement concepts. As part of their work, students investigate and use the standard addition and subtraction algorithms. They compare the use of algorithms to other methods and make generalizations about which work best for certain problems. In Module 3, students explore length and distance, liquid volume, time, mass, and weight. They investigate the relationships between common measures, and they solve problems that require them to convert measurements to smaller units within the same system of measure. 

    Skills Across the Grade Levels 

    The table below shows the major skills and concepts addressed in Unit 4. 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 4 Gr. 4 Elsewhere Gr. 5 

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

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

    4.NBT.2 Read and write multi-digit whole numbers represented with base-ten numerals, number names, and expanded form; compare pairs of multi-digit numbers; use >, =, and < symbols to record comparisons.

    4.NBT.3 Round multi-digit whole numbers to the nearest hundred, thousand, and ten thousand.

    Supports 4.NBT Fluently add and subtract multi-digit whole numbers, using an algorithm or another strategy.

    4.NBT.4 Use the standard algorithm with fluency to add and subtract multi-digit whole numbers. 

    4.MD.1 Identify the relative sizes of centimeters, meters, and kilometers; grams and kilograms; ounces and pounds; milliliters and liters; seconds minutes and hours.

    4.MD.1 Express a measurement in a larger unit in terms of a smaller unit within the same system of measurement.

    4.MD.1 Record equivalent measurements in different units from the same system of measurement using a 2-column table.

    4.MD.2 Solve story problems involving distance, time, liquid volume and mass using addition, subtraction, multiplication, and division of whole numbers. 

    4.MD.2 Solve story problems that involve expressing measurements given in a larger unit in terms of a smaller unit within the same system of measurement; use diagrams to represent measurement quantities. 

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