This grade 4 area test answer key gives the full solution and the scoring guide for each of the 8 test questions on area and perimeter of rectangles.
Use this answer key to score the area and perimeter test out of 20 points. Every solution shows the formula and the calculation, and the scoring note explains how to award each point and when to give partial credit.
Grade 4 Area Test Answer Key: questions 1–5
Question 1: Rectangle area and perimeter (2 points)
a) \(12 \times 5 = 60\) sq m.
b) \(2 \times 12 + 2 \times 5 = 24 + 10 = 34\) m.
60 sq m; 34 m
Scoring: 1 point for each part, with correct units.
Question 2: Square (2 points)
a) \(8 \times 8 = 64\) sq ft.
b) \(4 \times 8 = 32\) ft.
64 sq ft; 32 ft
Scoring: 1 point for each part.
Question 3: Missing sides (3 points)
a) \(72 : 9 = 8\) cm.
b) Half of 38 is 19, and \(19 – 12 = 7\) in.
c) \(90 : 15 = 6\) ft.
8 cm; 7 in; 6 ft
Scoring: 1 point for each correct width.
Question 4: Two rectangles on a grid (3 points)
a) A: \(8 \times 3 = 24\). B: \(6 \times 5 = 30\).
b) A: \(2 \times 8 + 2 \times 3 = 22\). B: \(2 \times 6 + 2 \times 5 = 22\).
c) \(30 – 24 = 6\).
24 and 30 sq units; 22 and 22 units; B is greater by 6 sq units.
Scoring: 1 point per part (both values needed in parts a and b).
Question 5: Ice rink laps (2 points)
a) \(2 \times 60 + 2 \times 40 = 120 + 80 = 200\) ft.
b) \(3 \times 200 = 600\) ft.
200 ft; 600 ft
Scoring: 1 point for each part.
Grade 4 Area Test Answer Key: questions 6–8
Question 6: Garden and fence (3 points)
a) \(14 \times 9 = 126\) sq ft.
b) \(2 \times 14 + 2 \times 9 = 28 + 18 = 46\) ft.
c) \(46 \times \$4 = \$184\).
126 sq ft; 46 ft; $184
Scoring: 1 point for each part; follow-through credit if part b is correct and part c uses it.
Question 7: Living room (2 points)
a) \(96 : 8 = 12\) ft.
b) \(2 \times 12 + 2 \times 8 = 24 + 16 = 40\) ft.
12 ft; 40 ft
Scoring: 1 point for each part; the perimeter point may use the student’s length from part a.
Question 8: Length twice the width (3 points)
a) Half of 54 is 27. Width plus length is 3 equal parts, so \(27 : 3 = 9\) m.
b) \(2 \times 9 = 18\) m.
c) \(18 \times 9 = 162\) sq m.
9 m; 18 m; 162 sq m
Scoring: 1 point for each part. A correct check, \(2 \times 18 + 2 \times 9 = 54\), is not required.
Scoring summary
20 points: add the points of every question of this grade 4 area test answer key.
How to use this grade 4 area test answer key
Use this grade 4 area test answer key to score the test fairly and to see which skills need more practice.
Printable PDF · Test Answer Key
Grade 4 Area and Perimeter of Rectangles test answer key
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