1true() 2false() 3number("1.5") 4number('abc') 5-number('abc') 6floor(0.1) 7floor(-0.1) 8floor(-0) 9floor(0) 10floor(5.2) 11floor(-5.2) 12ceiling(0.1) 13ceiling(-0.1) 14ceiling(-0) 15ceiling(0) 16ceiling(5.2) 17ceiling(-5.2) 18round(0.1) 19round(5.2) 20round(5.5) 21round(5.6) 22round(-0.1) 23round(-5.2) 24round(-5.5) 25round(-5.6) 26