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Across 1. The number of square units needed to cover the surface enclosed by a geometric figure. 5. The producted in which a number is a factor three times. 9. A whole number is said to be divisible by another number if the remainder is 0 when the first number is divided by the second. 11. Information,often numerical,which is gathered for statistical purposes. 12. The numerical factor of a term that contains a variable. 15. To find the value of an algebraic expression by replacing variables with numerials. 18. In a power,the number of times the base is used as a factor. 19. a whole number that is divisible by 2. 21. A comination of variables,numbers at least one operation. 23. A mathematical language that uses symbols,usually letters,along with numbers.The letters stand for numbers that are unknown. 24. Multiples that are shared by two or more numbers. 25. A number that divides into a whole number with a remaimder of zero. 26. A fraction that has a numerator that is greater than or equal to the denominator. 27. A symbol of equality,=. 28. A relation in which each element of the input is paired with exactly one element of the output according to a specifield rule.

Down 2. The way in which numbers are grouped when added or multiplied does not change the sum or product. 3. The greatest of the commen factors of two or more numbers. 4. The sum of two or more quantites divided by the number of quantities;the mean. 5. The order in which numbers are added or multiplied does not change the sum or product. 6. Any side of a parallelogram. 6. In a power,the number used as a factor. 7. To multiply a sum by a number,multiply each addend of the sum bythe number outside the parentheses. 8. The sum of any number and 0 is the number. 10. Decimals that name the same number. 13. A table for organizing a set of data that shows the number of times each item or number appears. 14. See coordinate plane. 16. A plane in which a horizontal number line and a vertical number line intersect at their zero points. 17. Fractions that name the same number. 20. The sum of the products of each digit and its place value of a number. 22. A mathematical sentence that contains the equals sighn,=.