3.NBT.1Use place value understanding to round whole numbers to the nearest 10 or 100.
In this unit students will explore different ways to round numbers to the nearest ten and hundred. The
primary strategy used in this rounding unit is the number line. Students will use the number line to round
numbers to the nearest ten and hundred. Rounding and other estimating strategies, such as benchmarking,
will help students have a better understanding of the reasonableness of their final answers when finding a
solution to a math problem.