First, round the numbers to the nearest whole number. Then estimate the difference. <br> 19.28 - 10.8 = <input min="0" type="number" id ="imp4pg181q8c_1" class="lineinput" placeholder="?" /> - <input min="0" type="number" id ="imp4pg181q8c_2" class="lineinput" placeholder="?" /> <br> = <input min="0" type="number" id ="imp4pg181q8c_3" class="lineinput" placeholder="?" />