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square number the product of a number times itself 2 x 2 = 4 3 x 3 = 9
square root one of two equal factors of a number
standard form a way to write numbers using digits23,456
terminating decimal a decimal that ends, having a finite number of digits after the decimal point 3.45 .734
triangular number a number that can be represented by a triangular array
underestimate an estimate that is less than the exact number
unlike fractions fractions with different denominators 3/8 3/5
whole number one of the numbers 0, 1, 2, 3, 4 which goes on without end
place value determines the value of a digit in a number, based on the location of the digit
positive integer integers greater than zero
prime number a whole number greater than 1 that has exactly two factors, one and itself
product the answer in a multiplication problem6 x 8 = 48
proportion an equation that shows that two ratios are equal
period each group of three digits separated by commas in a multidigit number
rate a ratio that compares two quantities having different units of measure
ratio the comparison of two numbers by division
rational number any number that can be written as a ratio where a and b are integers and b is not equal to zero
reciprocal one of two numbers whose product is 16 x 1/6 = 1
repeating decimal a decimal that doesn't end; it shows a repeating pattern of digits after the decimal point 6.333333
simplest form when one is the only number that can divide evenly into the numerator and the denominator of a fraction
factor a number that is multiplied by another number to find the product 6 x 5 = 30
factor tree a diagram that shows the prime factors of a number
figurate numbers numbers that can be represented by geometric figures
Fibonacci Sequence the infinite sequence of numbers formed by adding two previous numbers to get the next number 1, 1, 2, 3, 5, 8, 13, 21
greatest common factor GCF the greatest factor that two or more numbers have in common
integers the set of whole numbers and their opposites
inverse operations operations that undo each other5 + 4 = 9 therefore 9 - 4 = 5
least common denominator LCD the least common multiple of two or more denominators
least common multiple LCM the smallest number, other than zero, that two or more numbers can divide into evenly: the LCM of 6 and 9 is 18
negative integer integers less than zero
numerator the number above the line of a fraction that tells how many parts of the whole
percent the ratio of a number to 100; means "per hundred"
period each group of three digits seperated by commas in a multidigit number
average the number obtained by dividing the sum of a set of numbers by the number of addends
common factor a number that is a factor for two or more numbers
common multiple a number that is a multiple for two or more numbers
decimal a number with one or more numerals to the right of the decimal point 3.46
decimal point a symbol used to separate dollars from cents in money and the ones place from the tenths place in decimal numbers
decimal system a system of measurement based on the number 10
denominator the number below the bar in a fraction that tells how many equal parts are in the whole
dividend the number that is to be divided in a division problem
divisible capable of being divided so the quotient is a whole number and the remainder is zero
divisor the number that divides the dividend
equivalent having the same value or naming the same amount 1/2 = 2/4
exponent the number that tells how many times a base is to be used as a factor
Created by: klookinland