<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Math</title>
<script type="text/javascript">
document.write("<h1>파이 : " + Math.PI + "</h1>");
```
document.write("<h1>제곱 : " + Math.pow(2,3) + "</h1>");
document.write("<h1>제곱 : " + (2 ** 3) + "</h1>");
document.write("<h1>절대값 : " + Math.abs(-10) + "</h1>");
document.write("<h1>루트 : " + Math.sqrt(4) + "</h1>");
document.write("<h1>최대값 : " + Math.max(1, 2, 3, 4, 5) + "</h1>");
document.write("<h1>최소값 : " + Math.min(1, 2, 3, 4, 5) + "</h1>");
document.write("<h1>정수로 반올림 : " + Math.round(123.456) + "</h1>");
document.write("<h1>소수 1자리 남기고 반올림 : " + (Math.round(123.456 * 10) / 10) + "</h1>");
document.write("<h1>소수 2자리 남기고 반올림 : " + (Math.round(123.456 * 100) / 100) + "</h1>");
document.write("<h1>올림 : " + Math.ceil(123.456) + "</h1>"); // 천장함수
document.write("<h1>내림 : " + Math.floor(123.456) + "</h1>"); // 바닥함수
```
</script>
</head>
<body>
</body>
</html>
