https://www.w3schools.com/jsref/jsref_obj_math.asp
https://www.w3schools.com/jsref/jsref_abs.asp
Math.abs(7)–>7
Math.abs(-7)–>7
https://www.w3schools.com/jsref/jsref_max.asp
Math.max(1,10,7)–>10
https://www.w3schools.com/jsref/jsref_min.asp
Math.min(1,10,7)–>1
https://www.w3schools.com/jsref/jsref_round.asp
Math.round(1.23)–>1
let num=1.234
Math.round(num*100)/100 –>1.23
https://www.w3schools.com/jsref/jsref_random.asp
Math.random()–>0.12312343534
Math.floor((Math.random() * 10) + 1); –> Número entre 1 y 10