<p>
 Number 1
</p>
<select id="number1">
 <option value="0">0</option>
 <option value="1">1</option>
 <option value="2">2</option>
 <option value="3">3</option>
 <option value="4">4</option>
 <option value="5">5</option>
 <option value="6">6</option>
 <option value="7">7</option>
 <option value="8">8</option>
 <option value="9">9</option>
 <option value="10">10</option>
</select>
<p>
 Number 2
</p>
<select id="number2">
 <option value="0">0</option>
 <option value="1">1</option>
 <option value="2">2</option>
 <option value="3">3</option>
 <option value="4">4</option>
 <option value="5">5</option>
 <option value="6">6</option>
 <option value="7">7</option>
 <option value="8">8</option>
 <option value="9">9</option>
 <option value="10">10</option>
</select>
<p>
 <input type="button" value="Add" onClick="Addition()">
 <input type="button" value="Subtract" onClick="Subtract()">
 <input type="button" value="Divide" onClick="Divide()">
 <input type="button" value="Multiply" onClick="Multiply()">
 <input type="button" value="Difference" onClick="Difference()">
</p>
<p id="playingWithMaths"></p>