1.9.1 Using Symbols to Add Fractions

• 2

• 4

• 8

• 16

• 2

• Both sums are equal

Which of the following fractions are correctly written as the sum of two unit fractions?

Suppose your friend has forgotten how to add two fractions with unlike denominators. What would you do to help?

• Explain the concept of finding a common denominator and then adding the fractions.

• Tell them to multiply the fractions directly.

• Suggest using a calculator to find the answer.

• Advise them to ignore the denominators and add the numerators directly.