Flashcards in Mathematics Deck (48)
What is meant by the root of a number?
The root of a number is one of two or more equal numbers that, when multiplied together, will produce the number.
Define square root.
The factor of a number that, when squared, will give the number.
How can you perform math with very small or very large numbers?
Scientific Notation (Powers of 10).
How may 1,000,000 be written?
10 to the 6th power.
What formula is used to find the area of a rectangle?
A = L x W
Area equals length times width.
What formula is used to find the area of a circle?
A = pi x r^2 or, A = 0.7854 x D^2
What is the significance of the constant pi?
Pi is the ratio of the circumference to the diameter of any circle.
What is a trapezoid?
A closed four-sided figure in which only one pair of opposite sides are parallel.
Show two ways a ratio is expressed.
7/8 or 7:8
What is meant by a proportion?
A statement of equality between two ratios; for example, a/b = b/c is a proportion.
Change 0.29 from a decimal into a percent.
What is the rule for dividing fractions?
Reciprocate the divisor and multiply across.
What are the steps for adding or subtracting unlike fractions?
Find the least common denominator and convert the fractions to the same denominator.
What are the steps to convert a fraction to a decimal?
Divide numerator by denominator.
List the steps to convert a fraction to a percent.
Divide numerator by denominator, move decimal place, affix percentage sign.
How do you convert a decimal to its nearest fraction?
Place decimal over denominator equal to decimal length, reduce to simplest form.
Example: 0.38 = 38/100 = 19/50
0.425 = 425/1000 = 17/40
0.7896 = 7896/10000 = 987/1250
What formula is used to find the volume of a cylinder?
V = 0.7854 x d^2 x h or V = pi x r^2 x h
What formula is used to find the volume of a rectangular solid?
V = L x W x H
What formula is used to find the area of a triangle?
A = (B x H)/2
What is the value of the constant pi?
pi = 3.1416
What is the eighth power of 2?
What is the square root of 4,096?
What is meant by a negative number?
A number less than 0, or a number that is preceded by a minus (-) sign.
What is meant by a ratio and how is a ratio expressed?
A fraction that compares one number to another; for example, 6:2 is a ratio.
What is an angle?
A figure formed by two lines radiating from a common point.
What is a quadrant?
One fourth of a circle.
What is the square of 99?
What is the cube of 5?
What is the cube root of 1,000?