LESSON 6 Workshop: Add and Subtract Fractions

Mr. Moreno's class played a game. He asked the students to estimate the sum or difference of two fractions and then decide whether the exact answer was greater than or less than 1. Students put their thumbs up to indicate “greater than 1” or their thumbs down to indicate “less than 1.”

Here are the problems Mr. Moreno presented. Estimate the sums or differences. Write “> 1” if the answer is greater than one and “< 1” if the answer is less than one. Do not solve the problems using paper and pencil.

1. + =
2. + =
3. 2 − 1 =
4. 1 − 1 =

5. Mr. Moreno gave the students this problem:
Here are the students' solutions. Find exact answers and tell whether their solutions are correct or incorrect.
1. 
2. 
3. 

Use the Self-Check Questions and the Workshop Menu in the Find Fraction Sums and Differences pages in the Student Activity Book to help you choose practice with adding and subtracting fractions.