Embed a worksheet into a website.

1. Open the worksheet.
2. In the top menu click Embed in my website.
3. Choose width Fill width (100%) - recommended or choose Fixed width and enter your desired width. 
4. In the box labeled Your html code, copy this code entirely and insert it into your website.

Couple helpful notes...

As a Blogger:  First write your post. Then switch to HTML mode and paste this code at the end. Your worksheet will not appear in preview mode, but it will appear when you publish the entry.

In Wordpress: Wordpress doesn't allow script embedding, but you can achieve it using the plugin "Code Embed"