Round off the 2689 to the nearest thousand. Then estimate its value. <br> 2609 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="?" />