There are 342 boys and 358 girls in the first grade of Chenguang Primary School, 350 of them have had their health checks, and how many of them haven't had their health checks?
晨光小学一年级有男生342人，女生358人，已检查身体的有350人，没检查身体的有多少人？
<gadget id="calculator">358 - 350</gadget>
<output>8</output>

<gadget id="calculator">342 + 8</gadget>
<output>350</output>

<result>350</result>