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2.NBT Regrouping

### Alignments to Content Standards

Domain
NBT: Number and Operations in Base Ten
Cluster
Understand place value.
Standard
Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:

### Tags

This task is not yet tagged.
1. What number represents the same amount as 2 tens + 7 ones?
2. What number represents the same amount as 4 tens + 0 ones?
3. What number represents the same amount as 5 tens + 12 ones?
4. What number represents the same amount as 3 hundreds + 18 tens + 5 ones?
5. What number represents the same amount as 7 hundreds + 19 tens?

### Commentary

This task serves as a bridge between understanding place-value and using strategies based on place-value structure for addition. Place-value notation leaves a lot of information implicit. The way that the numbers are represented in this task makes this information explicit, which can help students transition to adding standard base-ten numerals.