Estimate the value by rounding first digit to the nearest ten first.. <br> 48 x 3 = <input min="0" type="number" id ="imp4pg005q4c_1" class="lineinput" placeholder="?" /> x <input min="0" type="number" id ="imp4pg005q4c_2" class="lineinput" placeholder="?" /> = <input min="0" type="number" id ="imp4pg005q4c_3" class="lineinput" placeholder="?" />