Riemann Sums Worksheets
Compute exact integrals and sums, distinguish area from signed integrals, and include constants for indefinite integrals.
Before you begin
Manipulate algebraic expressions and understand functions, limits and derivative notation.
Worked example
Approximate the area under f(x) = 3x on [0, 2] using 2 equal rectangles and right endpoints.
- The rectangle width is 1.
- Right endpoints are 1, 2, …, n. Add their function values and multiply by the width.
Answer: 9 square units
Check your result using the method in the example before moving to the next question.
Choose your level
These sets use the same exercise types and number ranges across level labels. Choose a fresh set for additional practice.
- Easy: Start with the preview and follow the worked example.
- Medium: Practice the same exercise types with a fresh numbered set.
- Hard: Use another set to practice explaining and checking your answers.
Questions and answer calculations checked on 2026-09-17. How we check worksheets. Free for personal and classroom use.
Preview and print an easy set
Try six questions below, or choose a full set at your level.
1
Approximate the area under f(x) = 2x on [0, 5] using 5 equal rectangles and right endpoints.
2
Approximate the area under f(x) = 1x on [0, 4] using 4 equal rectangles and right endpoints.
3
Approximate the area under f(x) = 4x on [0, 6] using 6 equal rectangles and right endpoints.
4
Approximate the area under f(x) = 6x on [0, 4] using 4 equal rectangles and right endpoints.
5
Approximate the area under f(x) = 2x on [0, 3] using 3 equal rectangles and right endpoints.
6
Approximate the area under f(x) = 1x on [0, 3] using 3 equal rectangles and right endpoints.
Answer Key
1. 30 square units2. 10 square units3. 84 square units4. 60 square units5. 12 square units6. 6 square units