Round off 2689 to the nearest thousand. Then estimate the value below.&nbsp;<br> 2689 x 4<br> ≈ <input min="0" type="number" id="imp5pg003q10a_1" class="lineinput" placeholder="?"> x 4 <br>= <input min="0" type="number" id="imp5pg003q10a_2" class="lineinput" placeholder="?">