If you have an answer that you want to change into a fraction hit Math then 1 (labeled Frac) and then enter.
The smallest improper fraction I could make would be called one plus one over infinity. Technically, the smallest improper fraction is indistinguishable from an integer.
-512-14+312 is an integer, not a fraction.
a mixed fraction is a number written out as a whole number plus a fraction: ex. 3 4/5 (three and four fifths) would be a mixed fraction. essentially a whole number plus a fraction (but it would actually be written without the plus sign).
23+23 is an integer, not a fraction.
As a decimal fraction, it is 8.81 This can also be written as 881/100.
78 + 34 is 112, which is an integer, not a fraction.
58 + 25 is an integer, not a fraction.
only if the positive fraction is "larger" than the negative one.
You can view images of can openers on Google Images. In addition, you will be able to find images of can openers of kitchen retailers such as Kitchen Stuff Plus.