Area and Perimeter (Advanced) — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Maya's garden is 8 m long and 5 m wide. The area is 40 square meters.
Grade 4: 8 x 5 = 40 sq m.
2. Maya's 8 m by 5 m garden has perimeter 26 meters.
Grade 4: 2(8) + 2(5) = 16 + 10 = 26 m.
3. A bedroom rug is 7 ft by 4 ft. The area is 28 square feet.
Grade 4: 7 x 4 = 28 sq ft.
4. A rectangular pool is 15 m long and 6 m wide. The perimeter is 42 meters.
Grade 4: 2(15) + 2(6) = 30 + 12 = 42 m.
5. A square poster has side 9 in. Its area is 81 square inches.
Grade 4: 9 x 9 = 81 sq in.
6. An L-shape is split into a 6 cm by 4 cm rectangle and a 3 cm by 2 cm rectangle. Total area is 30 square centimeters.
Grade 4: 6 x 4 = 24 and 3 x 2 = 6; 24 + 6 = 30 sq cm.
7. A classroom is 11 m by 8 m. Its area is 88 square meters.
Grade 4: 11 x 8 = 88 sq m.
8. A rectangular field is 20 ft long and 12 ft wide. Its perimeter is 64 feet.
Grade 4: 2(20) + 2(12) = 40 + 24 = 64 ft.
9. A T-shape is split into a 5 in by 2 in rectangle and a 3 in by 4 in rectangle. The total area is 22 square inches.
Grade 4: 5 x 2 = 10 and 3 x 4 = 12; 10 + 12 = 22 sq in.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Rectangle 9 m by 4 m: area
→ 36 square meters
30 square centimeters
Square side 7 ft: perimeter
→ 28 feet
22 inches
Rectangle 6 in by 5 in: perimeter
→ 22 inches
28 feet
Rectangle 10 cm by 3 cm: area
→ 30 square centimeters
36 square meters
Grade 4 area uses square units and perimeter uses linear units; compute each carefully.