Across
- 2. an answer to a subtraction problem
- 3. using the greatest place-value digit and changing all other digits to zero
- 6. a close guess at value
- 7. is a step-by-step method for calculating
- 8. to break apart a number by place value or addends
Down
- 1. to add numbers where each place valce is added
- 4. strategies to help solve multi-step problems
- 5. exchange between place value positions