Across
- 2. a missing piece of information
- 5. numbers that are close to the original value and make a problem easier to solve mentally
- 7. the distance between two numbers; the result of subtracting one number from another
- 9. math processes, such as addition, subtraction, multiplication, and division
- 11. to find an answer or solution to a problem
- 12. a model used to solve word problems that shows the relationship between known and unknown amounts
- 13. a product of two numbers; a number that can be divided evenly by another number
- 14. a reasonable guess that is close to the exact answer
- 17. states that numbers can be added in any order and the sum will be the same*
- 20. a plan or way of solving a problem or finding an answer
- 21. taking away an amount from a larger amount; finding the difference between two numbers
Down
- 1. the value of a digit that depends on its location within a number
- 3. a line with evenly spaced tick marks to show the position of a number in relation to other numbers
- 4. to show in some way; to stand for something
- 6. states that numbers that are added can be grouped in any order and the sum will be the same*
- 8. put together
- 10. finding a number that is close to the original number by changing it to the closest multiple of 10, 100, 1,000, etc.
- 15. the total amount; the result in addition
- 16. how many there are all in all
- 18. combining two or more numbers to get a sum, or total
- 19. a plan or way of solving a problem or finding an answer