Math/ teas Study Guide

Real number - Answer-the set of all rational and irrational numbers ex: Even numbers end in - Answer-0, 2, 4, 6, 8 Whole numbers - Answer-Natural numbers ( counting numbers) and zero; 0, 1, 2, 3... no fractions or decimals Rational numbers are - Answer-natural numbers , whole numbers and integers (-1,- 2,1,3,0) irrational numbers - Answer-Can't be written as a simple fraction. Pi is the most famous irrational number. Odd numbers - Answer-Can't be divided by 2 and leave a whole number, any odd numbers divided by 2 will leave a fraction. Ex: 23/2= 11.5 Odd numbers ends in: 1, 3, 5, 7, 9 1Convert to a decimal 1:8 - Answer-1 divided by 8= 0.125 Convert to a percent 0.125 - Answer-multiply by 100 (100 x 0.125) = 12.5% What is the percent of 0.58? - Answer-multiply by 100. (100 x 0.58= 58) What is the fraction of 0.58 ( look at fhe place value) - Answer-It's on the 58 hundredths or 58/100 Reduce the fraction of 58/100 - Answer-Divided by 2 on both nunbers to get the reduced fraction. ( 58/ 2= 29 and 100/2= 50) therefore the answer is 29 over 10