Adding and Subtracting Fraction Models

Manny and Angel shared a sandwich. The models are shaded to show the fraction of the sandwich each of them ate. What fraction of the sandwich did Manny and Angel eat altogether?

Gabriela, Omar and Iris shared one pie. The models are shaded to show the fraction of the pie each of them ate. What fraction represents the total amount of pie the three students ate?

The shaded part of the model represents a fraction. Another fraction was subtracted from the first fraction. Which expression does the model represent?

The shaded part of the model represents a fraction. Another fraction was subtracted from the first fraction. Which expression does the model represent?

The shaded part of the model represents a fraction. Another fraction was subtracted from the first fraction. Which expression does the model represent?

The shaded part of the model represent a fraction. Another fraction was subtracted from the first fraction. Which expression does the model represent?

Cara and Marcus shared a candy bar. The models are shared to show the fraction of the candy bar each of them ate. What fraction of the candy bar did Cara and Marcus eat altogether?

Mrs. Ali collected notebook paper from her students at the beginning of the school year. The model is shaded to show the fraction of this notebook paper that Mrs. Ali used in each of the three months. What fraction of the notebook paper Mrs. Ali collected was used during these three months?

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number

When adding or subtracting fractions, I NEVER add or subtract the...

• numerators

• denominators

• mixed numbers

• equivalent fractions