Digital SAT Math Practice Flashcards

The sum of three consecutive even integers is 78. What is the smallest integer?

Answer: 24

Let the integers be n, n+2, n+4: 3n + 6 = 78, so n = 24.

Which of the following is a solution to the equation x² − 5x + 6 = 0?

Answer: 3

Factoring: (x − 2)(x − 3) = 0 gives x = 2 or x = 3; 3 is among the answer choices.

The volume of a rectangular box is 120 cm³. Its length is 5 cm and its width is 4 cm. What is its height?

Answer: 6 cm

V = l × w × h → 120 = 5 × 4 × h → h = 6 cm.

A sample of 50 students has a mean score of 70 and a margin of error of ±4. Which range most likely contains the true population mean?

Answer: 66 to 74

The confidence interval is 70 − 4 = 66 to 70 + 4 = 74.

If 4^x = 64, what is the value of x?

Answer: 3

64 = 4³, so 4^x = 4³ means x = 3.

A triangle has one angle of 90° and another of 37°. What is the third angle?

Answer: 53°

The angles of a triangle sum to 180°: 180 − 90 − 37 = 53°.

Which table of values represents a linear relationship?

Answer: x: 0,1,2,3 → y: 2,5,8,11

In the first table, y increases by a constant 3 for each unit increase in x, confirming a linear relationship.