. Grade 4, Illustrative icon

Rounding on the Number Line

Illustrative MathematicsVaries

This task helps students understand the concept of rounding by using the number line to illustrate how to find the closest benchmark numbers. This task also helps students lay the groundwork for developing more efficient rules for rounding based on the digits in a given number. As students reason through the value of each tick mark on each number line, teachers should engage in formative assessment questioning to check that students understand what one tenth of each interval must be as the interval changes throughout this question

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