Standard Alignments:

TEKS Math: 3.2.C

(C) Represent a number on a number line as being between two consecutive multiples of 10; 100; 1,000; or 10,000 and use words to describe relative size of numbers in order to round whole numbers

AU Math: ACMNA099

(Y5) Use estimation and rounding to check the reasonableness of answers to calculations (ACMNA099)

CCSS Math: 3.NBT.1

3.NBT.1 Use place value understanding to round whole numbers to the nearest 10 or 100.