General: Mathematics 🔊 Flashcards
What is the formula for area of a rectangle?
A= LengthxWidth
What is π?
Pi 3.1416 or the ratio of the circumference to the diameter of any circle
What is the formula for the circumference to the diameter of any circle?
C= πD
What is the formula for the area of a circle?
A= πR²
What is the formula for the volume of a cylinder?
V= πR²xH (area times height)
What is the formula used for finding the volume of a rectangle?
V= LxWxH
What is the root of a number?
The base number that when multiplied by itself one or more times will produce the given number
Give an example of perfect squared numbers.
4, 9, 16, 64, 100, 144, etc
What is a squared number?
A number that is multiplied by itself
How do you express a decimal as a percent?
Move the decimal two places and add the percent sign
Using the powers of ten, how is 1,000,000 expressed?
Ten to the sixth power
What is scientific notation?
Representing very large or small numbers using powers of 10
What is the sum of a large negative number and a small positive number?
Subtract the smaller number from the larger number and use the sign of the larger number in the answer
How is a ratio expressed?
As a fraction or with a colon between two numbers
What is a proportion?
A ratio that describes the relation between two objects or different dimensions
How do you divide one fraction by another?
Cross multiply
What are right, obtuse, and acute angles?
A right angle is 90°, an obtuse angle is greater than 90°, and an acute angle is less than 90°
What is a quadrant?
A quarter of a circle
What is a polygon?
Closed shape with three or more sides
What is a parallelogram?
A four-sided object with two pairs of parallel sides (rhombus)
What is the hypotenuse of a triangle?
The long side opposite the right angle
What is a mixed number?
A whole number followed by a fraction
How can a decimal number be changed into a fraction?
Multiply the decimal value by the desired denominator; the result will be the numerator of the fraction
Name some types of triangles.
Isosceles, equilateral, scalene, obtuse, acute, and right
What is an equilateral triangle?
All three sides are the same length