Estimate the value by rounding first number 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="?">