There are 160 girls in the fifth grade, and 10% fewer boys than girls. How many boys are there in the fifth grade?
五年级有女生160人，男生比女生少10%，五年级有男生多少人？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">160 * (9/10)</gadget>
<output>144</output>

<result>144</result>