There are 369 boys and 348 girls in the third grade of Hope Primary School. There are 377 people who have checked their bodies, how many people have not checked their bodies?
希望小学三年级有男生369人，女生348人．已经检查身体的有377人，没检查身体的有多少人？
<gadget id="calculator">348 - 377</gadget>
<output>-29</output>

<gadget id="calculator">369 + (-29)</gadget>
<output>340</output>

<result>340</result>