Across
- 1. problem A math problem written using words and real-life situations.
- 4. math Solving math problems in your head without writing them down.
- 6. To find the answer to a problem.
- 9. A number that is added to another number in an addition problem.
- 11. Addition facts where the same number is added twice. Example: 4 + 4 = 8
- 14. To take one number away from another number.
- 16. groups Groups that each have the same number of objects.
- 17. sentence A math sentence using numbers and symbols to show an operation or comparison.
- 19. addend An unknown number in an addition problem. Example: 5 + ___ = 9
- 21. around facts Addition facts that use the same numbers in a different order but have the same sum. Example: 2 + 6 = 8 and 6 + 2 = 8
- 22. Horizontal lines of objects in an array.
- 24. The answer to a subtraction problem.
- 29. The math operation used to combine numbers to find a total or sum.
- 30. family A group of related addition and subtraction facts that use the same numbers. Example: 3 + 4 = 7 and 7 − 4 = 3
- 31. A set of objects put together.
- 34. equation A math sentence that is correct. Example: 4 + 2 = 6
- 35. addition Adding the same number again and again. Example: 3 + 3 + 3
- 36. Having the same amount or value.
- 37. A math action such as addition or subtraction.
- 39. number A number that cannot be divided into two equal groups evenly.
Down
- 2. plus one An addition strategy using a doubles fact and adding one more. Example: 4 + 5 = 4 + 4 + 1
- 3. A plan or method used to solve a math problem.
- 5. property A rule that says changing the order of numbers does not change the answer in addition. Example: 3 + 5 = 5 + 3
- 7. Vertical lines of objects in an array.
- 8. A sequence that repeats or follows a rule.
- 10. The math operation used to find how much is left or the difference.
- 12. number A number that can be divided into two equal groups with nothing left over.
- 13. than A value that is smaller than another value. Example: 2 < 5
- 15. A missing number or value that needs to be found in a math problem.
- 18. The answer to an addition problem.
- 20. than A value that is larger than another value. Example: 9 > 4
- 23. count Counting forward by the same number each time. Example: 2, 4, 6, 8
- 25. equation A math sentence that is not correct. Example: 5 + 2 = 10
- 26. A math sentence that uses an equals sign to show two amounts are the same. Example: 5 + 3 = 8
- 27. To decide if one number is greater than, less than, or equal to another number.
- 28. ten A strategy where numbers are combined to make 10 first to help solve a problem more easily.
- 32. value The value of a digit based on its position in a number. Example: In 45, the 4 means 40.
- 33. Objects arranged in equal rows and columns to help show repeated addition or multiplication.
- 38. To put two or more numbers together to find a total.