Grade 8 Math Flashcards
7 cards from real SBAC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Grade 8 Math flashcards as text
A right triangle has legs 6 and 8. What is the hypotenuse?
Answer: 10
By the Pythagorean theorem, √(36 + 64) = √100 = 10.
What is the volume of a cylinder with radius 3 and height 5? (Use π ≈ 3.14)
Answer: 141.3
V = πr^2h = 3.14 × 9 × 5 = 141.3.
After translating point (2, 5) by 3 right and 4 down, what are its coordinates?
Answer: (5, 1)
Add 3 to x and subtract 4 from y: (2+3, 5-4) = (5, 1).
A figure is reflected over the y-axis. The point (4, -2) maps to which point?
Answer: (-4, -2)
Reflection over the y-axis negates the x-coordinate.
What is the distance between points (0, 0) and (3, 4)?
Answer: 5
Distance = √(3^2 + 4^2) = √25 = 5.
Two figures are congruent if one can be obtained from the other by which transformations?
Answer: Rotations, reflections, and translations
Rigid motions — rotations, reflections, translations — preserve size and shape.
What is the volume of a cone with radius 3 and height 4? (Use π ≈ 3.14)
Answer: 37.68
V = (1/3)πr^2h = (1/3)(3.14)(9)(4) = 37.68.