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CSET Flash Cards - Math
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Terms in this set (46)
Only the numerators are added together. Since the denominators are the same, they are not added together.
When adding or subtracting two fractions, are the numerators of the two fractions added? Are the denominators of the two fractions added?
Postive
When one multiples or divides a negative number by a negative number, the answer is...
Yes and Yes
When multiplying two fractions, are the numerators of the two fractions multiplied? Are the dominators of that two fractions mulitplied?
Negative
When one multiplies or divides a positive number by a negative number, the answer is...
No, because division by 0 is undefined
May a fraction have 0 as a denominator?
5. The range is the value of the smallest number subtracted from the largest number in the set.
In a set of these numbers, 1,2,2,4,5,6, what is the range?
Add all the numbers, then divide their sum by four. The mean is 85.
How does one find the mean of these four numbers: 30, 40, 42, 58? What is the mean?
Average
What is another word for mean?
3. The middle number in a set of numbers. Half the numbers are below the value of the median, half are above
What is the median of 1, 2, 2, 4, 5, 6?
The mode is the number that appears most frequently. There may be more than one mode, or no mode
In a set of numbers, what is mode?
y=3
Solve 3(y+5) = 8y
Add 3 and 3
When solving the algebraic equation 2x(3+3) , the first step is to...
x2+ 2x - 15
Use the FOIL method (first, outer, inner, last) to solve: (x+5)(x-3)
Get all like terms on the same side. Subtract 5 from both sides. The result is 4x = 12
When solving linear equations such as 4x + 5 = 17, what should one do first?
Area = length x width; a = lw
What is the formula to find Area?
Add up the length of all sides
How does one calculate the perimeter of a rectangle?
Distance = rate x time; d = r t
What is the formula for calculating Distance?
P(E) = m/n; Probability (Event you want to measure) = ways of occurring / possible outcomes
What is the formula for calculating probability?
A = 1/2 b h
How does one calculate the area of a triangle?
C = d π; A = (2r)π
What is the formula for calculating the circumference of a circle?
The horizontal line is the x axis. The vertical line is the y axis
In a geometric plane, which line is the x axis and which is the y axis?
Volume is the interior of a figure that is three-dimensional. The formula to calculate volume is V = 1
w
h
What is volume and what is the formula to calculate volume?
90 degrees
What is the measurement of a right angle?
Greater than 90 degrees
What is the measurement of an obtuse angle?
Their sum is 90 degrees
Complete the sentence: If two angles are complementary...
Their sum is 180 degrees
Complete the sentence: If two angles are supplementary...
P(King) = 4/52 = 1/13
What is the probability of drawing a King from a standard deck of playing cards?
5
What is the square root of 25?
Have the same measurement value
If two angles are congruent, they...
Their sum is 90 degrees
What is the measurement of an acute angle?
1 / 5
3 / 7 x 7 / 15 =
1
Natural or counting integers begin with which number?
0
Whole numbers begin with this number, then continue up the number scale.
Yes
Do integers include both positive and negative numbers?
Associative property
( a + b ) + c = a + ( b + c ) is an example of which property?
Commutative property
A + B = B + A is an example of which property?
Distributive property
a ( b + c ) = ab + ac is an example of which property?
Prime number
A whole number greater than 1 which has only two different whole number factors, 1 and itself, such as 5, is called a ...
Composite number
A whole number that has three or more whole number factors, such as 6, is called a ...
Squared
When a base has an exponent of 2, that based is said to be...
5
What is the cubed root of 125?
0.15
How is 15% written as a decimal?
Multiply the two fractions
When dividing two fractions, one first gets the reciprocal of the second fraction. Then what?
1/4 and .25
How is 25% written as a fraction in its lowest terms, and as a decimal?
15/100, then can be reduced to 3/20
How is 15% written as a fraction?
Divide the numerator by the denominator to get the equivalent of the number as a fraction.
To get a decimal number from a fraction, what does one do to the fraction's numerator and denominator?
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