standard_description: Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
problem_activity: Task
A number $n$ is shown on the number line.
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1. The tick marks are evenly spaced. Label them. 2. What is $n$ rounded to the nearest hundredth? 3. What is $n$ rounded to the nearest tenth?


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