WCA 4050 Grades 2 and Up
4050 Digit Detective
2.NBT.1 Understand the three digits of a three digit number represent amounts of hundreds, tens, and ones.
2.NBT.6 Add up to four two digit numbers using strategies based on place value and properties of operations.
2.NBT.8 Mentally add 10 or 100 to a given number. 100-900.
3.NBT.1 Use place value understanding to round whole numbers to the nearest 10 or 100.