Mathematics Content Areas Flashcards

A rectangle has a length of 12 cm and a width of 8 cm. What is the area of the rectangle?

Answer: 96 cm²

Area of a rectangle = length × width = 12 × 8 = 96 cm².

Which of the following is equivalent to 3/4?

Answer: 0.75

3 ÷ 4 = 0.75, so 3/4 is equivalent to 0.75.

A bag contains 5 red marbles, 3 blue marbles, and 2 green marbles. What is the probability of randomly selecting a blue marble?

Answer: 3/10

Probability = 3 blue ÷ (5+3+2) total = 3/10.

Simplify the expression: 5x + 3y - 2x + y

Answer: 3x + 4y

Combine like terms: (5x - 2x) + (3y + y) = 3x + 4y.

What is the value of 2³ × 2²?

Answer: 32

2³ × 2² = 2^(3+2) = 2⁵ = 32.

The table shows the number of books read by students: 2, 4, 3, 5, 6, 4, 3, 4. What is the mode?

Answer: 4

The mode is 4 because it appears 3 times, more than any other value.

A store sells pencils for $0.25 each. How much would 16 pencils cost?

Answer: $4.00

16 × $0.25 = $4.00.