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