Across
- 5. the result of using greater numbers to estimate a sum or product
- 8. a rectangular model used to show part/part/whole relationships
- 9. a mathematical sentence that uses an equal sign to show that two expressions have the same value
- 10. a mathematical phrase that contains numbers and/or letters and at least one operation
Down
- 1. the result of using smaller numbers to estimate a sum or product
- 2. two operations that undo each other
- 3. to give a close guess
- 4. the answer to an multiplication problem
- 6. numbers numbers close in value to the original number but easier to estimate or calculate
- 7. the numbers that are multiplied together to get a product