The number of girls in Class 1 is 3/5 of the number of boys, so it is correct that the number of girls is smaller than the number of boys.
六1班女生人数是男生人数的(3/5)，那么女生人数比男生人数少多少是正确的．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>