generate numbers

function gen_numbers() {

    for (var i = 0; i < 28; i++ ) {

        var number1 = getRandomInt(12);
        var number2 = getRandomInt(number1);
	    var number3 = getRandomInt(12);

        var add_sub = Math.round(Math.random());
        if (add_sub) {
            
        console.log(number1.toString().padStart(3," ") + "\n+" + number3.toString().padStart(2," ") + "\n"+"".padStart(3,'\u203E')+"\n") ;
            
        } else {

            console.log(number1.toString().padStart(3," ") + "\n-" + number2.toString().padStart(2," ") + "\n"+"".padStart(3,'\u203E')+"\n") ;

        }
    

    }


}


function getRandomInt(max) {
    return Math.floor((Math.random() * Math.floor(max)) + 1);
  }


  gen_numbers();