D125 - Mathematics for Elementary Educators I QUESTIONS AND ANSWERS

D125 - Mathematics for Elementary Educators I QUESTIONS AND ANSWERS Numbers - CORRECT ANSWERS A word or symbol (such as "five" or "16" ) that represents a specific amount or quantity Set - CORRECT ANSWERS A collection of things. In the context of math, these are usually collections of numbers Whole Numbers - CORRECT ANSWERS A number whose value is 0 or greater (negative numbers are not considered whole numbers) and can be represented without a fractional or a decimal component Integers - CORRECT ANSWERS A number (positive, negative, or zero) that can be represented without a fractional or a decimal component Positive Number - CORRECT ANSWERS A number whose value is greater than zero. On the number line, positive numbers are to the right of zero. Negative Number - CORRECT ANSWERS A number whose value is less than zero. On the number line, negative numbers are to the left of zero. Number Line - CORRECT ANSWERS A line in which points are matched to real numbers. The numbers increase in value as you move to the right. Rational Numbers - CORRECT ANSWERS Any number that can be represented as a quotient of two integers. Decimal numbers that either terminate or repeat are rational numbers. Fraction - CORRECT ANSWERS Essentially a part of a whole number denoted by a slash, /, or a fraction bar, -. A fraction contains two integers, separated by a slash or fraction bar. Decimal - CORRECT ANSWERS A number with a whole number part, decimal point, and decimal part. The whole number may be zero. Terminating Decimals - CORRECT ANSWERS A decimal with a finite number of digits Recurring Decimals - CORRECT ANSWERS A decimal with a digit or string of digits that repeats forever Irrational Numbers - CORRECT ANSWERS Numbers that cannot be represented as a fraction of two integers. Decimals do not terminate or repeat. Square Roots - CORRECT ANSWERS For a given number, this is the number that produces the given number when multiplied by itself Perfect Square - CORRECT ANSWERS T