In this Grade 4 Eureka Math lesson from Chapter 3, students use place value understanding to round multi-digit numbers to any place value, including the nearest thousand, ten thousand, and hundred thousand. Students practice applying rounding to real world scenarios, such as estimating stamp sales and predicting visitor counts, to determine the most appropriate unit of rounding for a given situation. The lesson builds fluency with multi-digit rounding while developing students' judgment about when different levels of estimation are most useful.
Section 1
Rounding to Different Place Values
To round a number to a specific place value, examine the digit immediately to the right of that place. If the digit is 5 or greater (), round up by increasing the digit in the target place value by one. If the digit is 4 or less (), round down by keeping the digit in the target place value the same. All digits to the right of the rounded place become zeros.
Section 2
Justifying Rounding Choices in Real-World Contexts
The choice of place value for rounding depends on the context and purpose of the estimation. For situations requiring a minimum quantity (e.g., supplies, tickets), always round the required number up to the next appropriate unit to ensure sufficiency. This contextual rule may override standard rounding rules.
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Section 1
Rounding to Different Place Values
To round a number to a specific place value, examine the digit immediately to the right of that place. If the digit is 5 or greater (), round up by increasing the digit in the target place value by one. If the digit is 4 or less (), round down by keeping the digit in the target place value the same. All digits to the right of the rounded place become zeros.
Section 2
Justifying Rounding Choices in Real-World Contexts
The choice of place value for rounding depends on the context and purpose of the estimation. For situations requiring a minimum quantity (e.g., supplies, tickets), always round the required number up to the next appropriate unit to ensure sufficiency. This contextual rule may override standard rounding rules.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter