2. Adding and Subtracting Mixed Numbers There are two ways to add or subtract mixed numbers. One way is to convert them into improper fractions and use the basic addition and subtraction rules of fractions. Or you can add or subtract in the mixed number format. 7 4 9 3 3 18 Subtract the whole numbers. 4 Subtract the fractions. X 2 8 18 5 Remember that the fractions must have common denominators!! BUT WAIT, there’s something you need to remember...

3. What if one of the numbers in the equation is a whole number? 7 3 3 18 Remember, fractions are subtracted from fractions and whole numbers from whole numbers. Because there is no fraction in the top number you have to borrow from the whole number. 18 Now subtract normally! 6 3 15 18