In this Grade 4 Eureka Math lesson from Chapter 6, students learn to solve multi-step word problems involving addition and subtraction by drawing and labeling tape diagrams. Students practice breaking complex problems into sequential steps, such as finding unknown quantities across multiple conditions, then assess the reasonableness of their answers using rounding and estimation. The lesson builds fluency with large numbers and unit conversions while reinforcing strategic problem-solving skills.
Section 1
Modeling Comparative Relationships with Tape Diagrams
To model comparative relationships, use tape diagrams where each quantity is a bar. If quantity is more than quantity , then . If quantity is fewer than quantity , then . The total is the sum of all quantities:
Section 2
Assessing Reasonableness with Rounding
To check if an answer is reasonable, compare the exact answer to an estimated answer. The estimated answer is found by rounding the numbers in the problem before calculating.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter
Expand to review the lesson summary and core properties.
Section 1
Modeling Comparative Relationships with Tape Diagrams
To model comparative relationships, use tape diagrams where each quantity is a bar. If quantity is more than quantity , then . If quantity is fewer than quantity , then . The total is the sum of all quantities:
Section 2
Assessing Reasonableness with Rounding
To check if an answer is reasonable, compare the exact answer to an estimated answer. The estimated answer is found by rounding the numbers in the problem before calculating.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter