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<blockquote data-quote="Old Man Jingles" data-source="post: 3903678" data-attributes="member: 18222"><p>I can see that ... my mental math uses the same approach.</p><p></p><p>In my method I just saw 350+70 = 420</p><p>Using a slide rule for 4 years at Ga Tech helped to ingrain mental math because a slide rule does not give you a final result.</p></blockquote><p></p>
[QUOTE="Old Man Jingles, post: 3903678, member: 18222"] I can see that ... my mental math uses the same approach. In my method I just saw 350+70 = 420 Using a slide rule for 4 years at Ga Tech helped to ingrain mental math because a slide rule does not give you a final result. [/QUOTE]
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