standard_description: Explain why addition and subtraction strategies work, using place value and the properties of operations. (Explanations may be supported by drawings or objects.)
problem_activity: Task
Plot the following numbers on the number line:
80
328
791
[IMG]
Round each number to the nearest 100. How can you see this on the number line?
Round each number to the nearest 1000. How can you see this on the number line?


aligns: no