This task is designed for third graders to introduce rounding numbers to the nearest hundred. The task instructions include background knowledge on rounding to the nearest ten and argumentative language when asking the students to create a conjecture about how to round and how rounding to the nearest hundred compares to the nearest ten. Students are asked to practice the idea using a three-digit number.

Microsoft Word version: 3_NBT_RoundingNearestHundred_ThinkPairShare_Conjecture

PDF version: 3_NBT_RoundingNearestHundred_ThinkPairShare_Conjecture