If you’re a new arrival, you might want to read my previous post<\/a> on scientific notation.\u00a0 Assuming you’re good with it, we’ll continue.<\/p>\n Scientific calculators have specific keys you’re meant to use to enter numbers in scientific notation.\u00a0 For best results, you should enter scientific notation the way that is intended for your model of calculator.<\/strong><\/p>\n In front of me I have a Sharp, a Casio, and a Texas Instruments.\u00a0 All are fairly plain scientifics that run between $10 and $20 last I checked.\u00a0 By far most of the calculators I see students using are similar to one of these three.\u00a0 However, I do see other makes occasionally that use different keys for scientific notation.<\/p>\n Example 1: Enter 7.29×10-3<\/span><\/sup> on a Sharp EL-520W.<\/strong><\/p>\n The Sharp calculators I’ve seen, including this one, use the Exp<\/strong> key for entering scientific notation:<\/p>\n 7.29Exp<\/strong>-3 does it.\u00a0 You’ll know you’ve entered it correctly because on the right hand side you’ll see “x10-03<\/span><\/sup>“.<\/p>\n Example 2:\u00a0 Enter 7.29×10-3<\/span><\/sup> on a Casio fx-260 Solar.<\/strong><\/p>\n As much as I’ve seen, Casio also uses the Exp<\/strong> key for entering scientific notation.\u00a0 Use the same key sequence as in Example 1.\u00a0 With this model of Casio, you’ll see “-03” as a superscript.<\/p>\n Example 3:\u00a0 Enter 7.29×10-3<\/span><\/sup> on a Texas Instruments TI-30XA.<\/strong><\/p>\n The Texas Instruments calculators I’ve seen use the EE<\/strong> key for scientific notation.\u00a0 You will enter 7.29EE<\/strong>-3.\u00a0\u00a0It will also accept 7.29EE<\/strong>3-.<\/p>\n Hope this helps!<\/p>\n