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The Fx83 comes with a hard case for protection. It has all the features of the previous version, including Natural Display (expression and answer appear as in your book) with the addition of the following features - New Verify Function checking tool for students e.g. 10 + 2 = 2 + 10 ?, Natural Number Divisors e.g. 10 = 2 X 5, Recurring Decimals e.g. 1 Divided by 3 = 0.3333333 now displays 0.30 - which is standard mathematical notation.