JSFiddle - React, Tailwind, and code Playground

HTML

<div id="starter">
    <input type="button" id="start" value="Начать">
</div>

JavaScript

function sum(a, b) {
    return a + b;
}

function getNumber() {
    return Math.round(Math.random()*99);
}

function addLine(a, b) {
    var line = '<div><span class="a">'+ a + ' + </span><span class="b">' + b + ' =</span><input class="result"> <b class="bingo"></b></div>';
    $('#starter').append(line);
}

function checkResultAndGoNext(val, a, b) {
    if(val == sum(a, b)) {
        
    }
}

$('#start').on('click', function() {
    var a = getNumber(),
        b = getNumber();
    addLine(a, b);
    bindKeyup();
    
    
});

function bindKeyup() {
    $('.result').on('keyup', function() {
        var val = $(this).val(),
            a = parseInt($(this).parent().find('.a').text()),
            b = parseInt($(this).parent().find('.b').text())
        
        if(val == sum(a, b)) {
            $(this).attr('disabled', true);
            $('.bingo').text('Урааа, ответ верный!!!11');
            a = getNumber();
            b = getNumber();
            addLine(a, b)
           bindKeyup()
        }
    });
}