AzM2 Grade 4 Mathematics 2 — Questions and Answers
Question 1: A square has a side length of 7 inches. What is its perimeter?
- 14 in
- 28 in (Correct answer)
- 49 in
- 21 in
Correct answer: 28 in
Perimeter of a square = 4 × side length = 4 × 7 = 28 inches.
Question 2: What is 3/8 + 2/8?
- 5/16
- 5/8 (Correct answer)
- 6/8
- 1/2
Correct answer: 5/8
When fractions share the same denominator, add only the numerators: 3 + 2 = 5, keeping the denominator 8, giving 5/8.
Question 3: Which of the following numbers is prime?
- 9
- 15
- 17 (Correct answer)
- 21
Correct answer: 17
17 is prime because its only factors are 1 and 17; the others (9=3×3, 15=3×5, 21=3×7) have additional factors.
Question 4: What is 25 × 16?
- 380
- 390
- 400 (Correct answer)
- 410
Correct answer: 400
25 × 16 = 25 × 4 × 4 = 100 × 4 = 400.
Question 5: Which expression shows the distributive property applied to 6 × (3 + 4)?
- 6 × 3 + 6 × 4 (Correct answer)
- (6 + 3) × (6 + 4)
- 6 × 3 × 4
- 6 + 3 + 4
Correct answer: 6 × 3 + 6 × 4
The distributive property multiplies the outside factor by each addend separately: 6 × (3 + 4) = (6 × 3) + (6 × 4).
Question 6: How many lines of symmetry does a rectangle (that is not a square) have?
- 0
- 2 (Correct answer)
- 4
- 1
Correct answer: 2
A non-square rectangle has exactly 2 lines of symmetry — one horizontal and one vertical through the midpoints of opposite sides.
Question 7: A line plot shows values at 1/4, 1/4, 1/2, 3/4, 3/4, and 1. What is the sum of all data points?
- 3
- 3 1/4
- 3 1/2 (Correct answer)
- 4
Correct answer: 3 1/2
Converting to fourths: 1/4 + 1/4 + 2/4 + 3/4 + 3/4 + 4/4 = 14/4 = 3 2/4 = 3 1/2.
AzM2 Grade 4 Mathematics 2
A square has a side length of 7 inches.
What is its perimeter?