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MA19.1.13
Add within 100, using concrete models or drawings and strategies based on place value.

Add within 100, using concrete models or drawings and strategies based on place value.

### Unpacked Content

## UP:MA19.1.13

### Vocabulary

- Compose
- Multiple of 10

### Knowledge

- how to add within 100 using place vaue strategies.
- how to identify tens and ones.
- how to compose two digit numbers.
- how to decompose two digit numbers.

### Skills

- add within 100.
- Model addition problems using visual models.
- Record strategies for solving addition problems.
- Communicate the relationship between models and symbolic (numeric) representations.

### Understanding

- relationships between models of addition problems and written strategies of those models can be used to justify solutions.