This product is an estimation quiz or quick check that has 3 questions where students must solve the problem using one of the 4 operations and then estimate the answer.
This quiz has been used in a 3rd grade classroom, as they directly correlate with the 3rd Grade CC Objective:
CCSS.Math.Content.3.NBT.A.1 Use place value understanding to round whole numbers to the nearest 10 or 100.
They could also be used in an accelerated 2nd grade class or as a review of the 4th grade objective:
CCSS.Math.Content.4.NBT.A.3 Use place value understanding to round multi-digit whole numbers to any place.