Across
- 2. number – a number in the base-10 place value system used to represent a quantity that may include part of a whole and is recorded with a decimal point separating the whole from the part
- 4. method – a method for estimating a number in which the first digit of a number is retained and all remaining digits are changed to zero
- 6. – a mathematical phrase, with no equal sign or comparison symbol, that may contain a number(s), an unknown(s), and/or and operator(s)
- 9. – a method for adjusting an estimate to draw closer to an exact calculation
- 10. property of addition – if the order of the addends are changed, the sum will remain the same; a + b = c; therefore, b + a = c
- 12. a number in the form A over B.png where a and b are whole numbers and a < b where b is not equal to zero
- 13. (natural) numbers – the set of positive numbers that begins at one and increases by increments of one each time {1, 2, 3, ..., n}
- 14. a method for estimating a number by increasing or retaining a specific place value digit according to specific rules and changing all trailing digits to zero
- 16. fraction – a number in the form A over B.png where a and b are whole numbers and a > b where b is not equal to zero
- 17. – efficient application of procedures with accuracy
- 18. – a number in the form A over B.png where a and b are whole numbers and b is not equal to zero. A fraction can be used to name part of an object, part of a set of objects, to compare two quantities, or to represent division.
Down
- 1. a number that is composed of a whole number and a fraction
- 3. – reasoning to determine an approximate value
- 5. the part of a fraction written above the fraction bar that tells the number of fractional parts specified or being considered
- 7. common denominator (LCD) – the least common multiple of the denominators of two or more fractions
- 8. – the part of a fraction written below the fraction bar that tells the total number of equal parts in a whole or set
- 10. numbers – a method for estimating a group of numbers by slightly adjusting some or all of the numbers to allow for easy mental computation
- 11. property of addition – if three or more addends are added, they can be grouped in any order, and the sum will remain the same; a + b + c = (a + b) + c = a + (b + c)
- 15. symbols – symbols to show a group of terms and/or expressions within a mathematical expression