gcse ocr maths Flashcards
What is the formula for the area of a triangle?
Area = 1/2 × base × height
True or False: The sum of angles in a triangle is 180 degrees.
True
What is the quadratic formula?
x = (-b ± √(b² - 4ac)) / (2a)
Fill in the blank: The median is the _____ value in a data set when arranged in order.
middle
What does the acronym BIDMAS stand for?
Brackets, Indices, Division and Multiplication, Addition and Subtraction
What is the probability of flipping a fair coin and getting heads?
1/2 or 50%
True or False: A circle has a constant curvature.
True
What is the formula for the circumference of a circle?
Circumference = 2πr, where r is the radius.
What is the Pythagorean theorem?
In a right triangle, a² + b² = c², where c is the hypotenuse.
What is the mode of the following set of numbers: 1, 2, 2, 3, 4?
2
Fill in the blank: A line that intersects a circle at exactly one point is called a _____ line.
tangent
What is the value of π (pi) to two decimal places?
3.14
What is the slope of a line represented by the equation y = 3x + 2?
3
How do you convert a fraction to a decimal?
Divide the numerator by the denominator.
True or False: The product of two negative numbers is positive.
True
What is the formula for the volume of a cylinder?
Volume = πr²h, where r is the radius and h is the height.
What is the difference between mean and median?
Mean is the average; median is the middle value.
Fill in the blank: The x-intercept of a graph is where the line crosses the _____ axis.
x
What is the value of 7! (7 factorial)?
5040
What is the distance formula in a coordinate plane?
Distance = √((x2 - x1)² + (y2 - y1)²)
True or False: An obtuse angle measures more than 90 degrees.
True
What is the sum of the interior angles of a hexagon?
720 degrees
What is the greatest common divisor (GCD) of 12 and 16?
4
Fill in the blank: A polygon with four sides is called a _____.
quadrilateral
