Round the numbers to the nearest thousand. Then estimate the value. <br> 14 945 + 2578 = <input min="0" type="number" id ="imp4pg005q3b_1" class="lineinput" placeholder="?" /> + <input min="0" type="number" id ="imp4pg005q3b_2" class="lineinput" placeholder="?" /> = <input min="0" type="number" id ="imp4pg005q3b_3" class="lineinput" placeholder="?" />