Adding and Subtracting Mixed Numbers Challenge

What is the first step in adding or subtracting mixed numbers?

• Simplify the fractions

• Borrow from the whole number

• Find a common denominator

• Add the whole numbers

What should you do if the fractions in mixed numbers have different denominators?

• Add the whole numbers first

• Subtract the fractions directly

• Ignore the denominators

• Find a common denominator

In the first example, what is the sum of 8 and 5/11 plus 3 and 1/11?

• 10 and 6/11

• 12 and 6/11

• 11 and 6/11

• 11 and 5/11

When subtracting mixed numbers, what should you do if the fraction part of the minuend is smaller than the fraction part of the subtrahend?

• Borrow from the whole number

• Add the fractions directly

• Simplify the fractions first

• Ignore the fractions

In the second example, what is the result of 19 and 7/9 minus 11 and 8/9?

• 8 and 1/9

• 7 and 8/9

• 8 and 8/9

• 7 and 1/9

What is the least common denominator of 9 and 3?

• 12

• 9

• 6

• 3

In the third example, what is the result of 17 and 8/9 minus 10 and 2/3?

• 6 and 2/9

• 7 and 1/9

• 7 and 2/9

• 6 and 1/9

What is the common denominator of 6 and 12?

• 24

• 6

• 18

• 12

In the final example, what is the sum of 1 and 1/6 plus 4 and 11/12?

• 6 and 2/12

• 5 and 1/12

• 6 and 1/12

• 5 and 2/12

What should you do if the result of adding fractions is an improper fraction?

• Convert it to a mixed number

• Leave it as it is

• Subtract the whole numbers

• Find a new common denominator