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Area of Two Rectangles Joined is a free printable Grade 3 math worksheet on splitting a shape into two rectangles and adding their areas, aligned to Common Core standard 3.MD.C.7. It prints 6 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 18 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Area of Two Rectangles Joined

3.MD.C.7

NameDate

Work out each area. Show both parts.

1.Luis's patio is made of two rectangles side by side. One is 9 meters by 5 meters. The other is 5 meters by 4 meters. What is the total area?
Answer:
2.Luis's patio is made of two rectangles side by side. One is 7 feet by 8 feet. The other is 2 feet by 2 feet. What is the total area?
Answer:
3.Elsie's garden is made of two rectangles side by side. One is 4 feet by 5 feet. The other is 5 feet by 5 feet. What is the total area?
Answer:
4.Kofi's garden is made of two rectangles side by side. One is 5 meters by 3 meters. The other is 3 meters by 4 meters. What is the total area?
Answer:
5.Luis's patio is made of two rectangles side by side. One is 7 meters by 8 meters. The other is 6 meters by 2 meters. What is the total area?
Answer:
6.Suki's patio is made of two rectangles side by side. One is 8 feet by 6 feet. The other is 5 feet by 4 feet. What is the total area?
Answer:

LessonPrint · 3.MD.C.7 · Set 18 · free to copy for classroom use

Answer key — Area of Two Rectangles Joined

Set 18. Prints on its own sheet.

  1. 1.9 × 5 = 45; 5 × 4 = 20; 45 + 20 = 65 square meters
  2. 2.7 × 8 = 56; 2 × 2 = 4; 56 + 4 = 60 square feet
  3. 3.4 × 5 = 20; 5 × 5 = 25; 20 + 25 = 45 square feet
  4. 4.5 × 3 = 15; 3 × 4 = 12; 15 + 12 = 27 square meters
  5. 5.7 × 8 = 56; 6 × 2 = 12; 56 + 12 = 68 square meters
  6. 6.8 × 6 = 48; 5 × 4 = 20; 48 + 20 = 68 square feet

Last reviewed 2026-09-05. Aligned to 3.MD.C.7 of the Common Core State Standards for Mathematics.