# 2.NBT Regrouping

Alignments to Content Standards:
2.NBT.A.1

## Task

- What number represents the same amount as 2 tens + 7 ones?
- What number represents the same amount as 4 tens + 0 ones?
- What number represents the same amount as 5 tens + 12 ones?
- What number represents the same amount as 3 hundreds + 18 tens + 5 ones?
- What number represents the same amount as 7 hundreds + 19 tens?

## IM 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.

## Solution

- 27
- 40
- 62
- 485
- 890

## 2.NBT Regrouping

- What number represents the same amount as 2 tens + 7 ones?
- What number represents the same amount as 4 tens + 0 ones?
- What number represents the same amount as 5 tens + 12 ones?
- What number represents the same amount as 3 hundreds + 18 tens + 5 ones?
- What number represents the same amount as 7 hundreds + 19 tens?

## Comments

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