# Center

Number Puzzles: Addition and Subtraction (1–4)

## Stage 1: Within 10

### Narrative

Students work together to use digit cards to make addition and subtraction equations within 10 true. Each digit card may only be used one time on a page.

## Stage 2: Within 20

### Narrative

Students work together to use digit cards to make addition and subtraction equations within 20 true. Each digit card may only be used one time on a page.

## Stage 3: Within 100 without Composing

### Narrative

Students work together to use digit cards to make addition and subtraction equations within 100 without composing true. Each digit card may only be used one time on a page.

## Stage 4: Within 100 with Composing

### Narrative

Students use digit cards to make addition and subtraction equations true. They work with sums and differences within 100 with composing and decomposing. Each digit card may only be used one time on a page.

## Stage 5: Within 1,000

### Narrative

Students use the digits 0–9 to make addition equations true. They work with sums and differences within 1,000.

## Stage 6: Beyond 1,000

### Narrative

Students use the digits 0–9 to make addition equations true. They work with sums and differences beyond 1,000.