Students must use higher level thinking skills to determine what the original number could be when rounded to a specific place value. They will use number lines to help create a list possible numbers.
Help students recognize that when given this type of problem, any rounded number will have many possible numbers that could have been the original number. They also need to understand that they will need to determine an equivalent decimal for the rounded number because the original number must have digits in places beyond what is was rounded to.
One last helpful note: make sure students understand the difference between the decimal point in a number and the period at the end of a sentence. When my students see a decimal number at the end of a sentence they often ask why there are two decimal points.
This printable has fall themed images. The clip art is from Krista Wallden's Creative Clips.