AzM2 Grade 4 Mathematics 2

Question 1

A square has a side length of 7 inches. What is its perimeter?

Accepted Answer

28 in

Answer

Perimeter of a square = 4 × side length = 4 × 7 = 28 inches.

Question 2

What is 3/8 + 2/8?

Accepted Answer

5/8

Answer

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?

Accepted Answer

17

Answer

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?

Accepted Answer

400

Answer

25 × 16 = 25 × 4 × 4 = 100 × 4 = 400.

Question 5

Which expression shows the distributive property applied to 6 × (3 + 4)?

Accepted Answer

6 × 3 + 6 × 4

Answer

The distributive property multiplies the outside factor by each addend separately: 6 × (3 + 4) = (6 × 3) + (6 × 4).

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