Question 1

How do I add fractions with different denominators?

Accepted Answer

Find the least common denominator (LCD), rewrite each fraction so it has that denominator, then add the numerators and keep the denominator. For 1/2 + 1/3 the LCD is 6, so it becomes 3/6 + 2/6 = 5/6.

Question 2

How does the calculator handle mixed numbers?

Accepted Answer

It converts each mixed number to an improper fraction first (whole × denominator + numerator, over the denominator), does the operation, then converts the answer back to a mixed number. Both forms are shown.

Question 3

Why do I flip the second fraction when dividing?

Accepted Answer

Dividing by a number is the same as multiplying by its reciprocal. 3/4 ÷ 2/5 asks how many 2/5 fit into 3/4, and multiplying by 5/2 answers exactly that: 15/8.

Question 4

What does "simplify" or "lowest terms" mean?

Accepted Answer

A fraction is in lowest terms when the numerator and denominator share no common factor other than 1. The calculator divides both by their greatest common factor and shows which number it used.

Question 5

Can I enter a negative fraction?

Accepted Answer

Yes. Put the minus sign on the numerator for a plain fraction, or on the whole-number part for a mixed number, like -1 1/2. The calculator keeps the sign through every step.