Unit 1 Review

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Across
  1. 3. the value assigned to a digit based on its position in a number
  2. 5. The answer to a subtraction problem
  3. 6. A set of routine steps used to solve problems
  4. 8. The way a number is written with words or said aloud
  5. 9. The way a number is written to show the place value of each digit
  6. 12. To compose (carry) or decompose (borrow) ones, tens, hundreds, thousands and so on
  7. 13. a symbol used to write numbers
Down
  1. 1. To give a close guess based on mathematical thinking
  2. 2. The way a number is written normally with numbers
  3. 4. Something that makes sense
  4. 7. To decide is numbers are greater, less, or equal to each other
  5. 10. a group of three places in each number, usually separated by a comma
  6. 11. The answer to an addition problem
  7. 12. To approximate the value of a number by finding the nearest ten, hundred, or other place value