HESI A2 Math Section Answered (2024)

whole number set of numbers that contains no fractions or decimals (0,1,2,3,4,189, 293) Intergers whole numbers and their opposites (negatives) (-1, -2, -3, -4, -5, 0, 1, 2, 3, 4, 5 prime number number that is only evenly divisible by 1 & itself - no remainder or decimal Image: prime number composite number positive integer (whole number) formed by multiplying 2 smaller integers together - all divisible by 2 - can be evenly divided by numbers other than 1 or itself Image: composite number decimals what follows decimal is a value less than 1 & added to the integer number preceding the decimal - division between the whole portion & the fraction (or decimal) portion of a number - EX: 3.15 3=whole; .15=decimal/fraction real numbers rational and irrational numbers rational numbers any number that can be expressed as a fraction, w/ a non-zero denominator - all integers are considered rational numbers - every rational number has a decimal that terminates/repeats Image: rational numbers irrational numbers numbers that cannot be expressed as a finite decimal -Pi is finite bc its decimal portion is unending Image: irrational numbers communitive property a+b=b+a Associative Property grouping of numbers doesn't matter in an addition problem Image: Associative Property decimal chart place value of decimals Image: decimal chart In dividing by 10, you move the decimal 1 position to the left, making a smaller # than before In multiplying by 10, move the decimal 1 position to the right, making a larger # than before