Unit 4 Vocab

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Across
  1. 1. Determine if one number is greater than, less than, or equal to another number.
  2. 3. A number that uses a decimal point to separate the whole number part from the fractional part.
  3. 6. Writing numbers using digits, with no words or expanded form.
  4. 9. Zeros at the end of a number to show place value.
  5. 13. Symbols used to group numbers or expressions together, such as parentheses, brackets, and braces.
  6. 15. An addition or subtraction strategy that uses friendly adjustments.
  7. 16. A mathematical phrase that has numbers, variables, and operations but no equal sign.
  8. 17. Writing a number to show the place value of each digit using multiplication.
  9. 20. An approximate answer that is close to the exact answer.
  10. 21. The numbers we use for counting: 1, 2, 3, 4, …
Down
  1. 1. Numbers that are close to the actual numbers and are easy to use to estimate.
  2. 2. Writing a number as the sum of the values of its digits.
  3. 4. A number written using digits.
  4. 5. The set of counting numbers and zero: 0, 1, 2, 3, …
  5. 7. Writing numbers using words.
  6. 8. Numbers that show the position or order in a list.
  7. 10. Adjusting a number to make it simpler but close to the original value.
  8. 11. Any one of the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9 used to form numbers.
  9. 12. The value of a digit based on its place in a number.
  10. 14. The skill to solve problems quickly, accurately, and efficiently.
  11. 18. The rules for the correct order to solve expressions.
  12. 19. An addition strategy where you add the higher place values first.