guesses on the grid in questions not penalized?

<p>i just read somewhere online that in the math grid in section, you don't lose .25 of a mark for each wrong question! is this true?</p>

<p><a href="http://www.erikthered.com/tutor/math-strategies.pdf%5B/url%5D"&gt;http://www.erikthered.com/tutor/math-strategies.pdf&lt;/a>
^source</p>

<p>Yes it’s true .</p>