Math Flashcards

(62 cards)

1
Q

>

A

Greater than

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2
Q

<

A

Less than

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3
Q

=

A

Equal to

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4
Q

Addends

A

Two or more numbers you add together

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5
Q

Sum

A

Answer to addition problem

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6
Q

Minuend

A

Number you subtract from in a subtraction problem

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7
Q

Subtrahend

A

Number you subtract in a subtraction problem

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8
Q

Difference

A

Answer to the subtraction problem

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9
Q

Factor

A

Number multiplied by another

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10
Q

Product

A

Answer in a multiplication problem

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11
Q

Divisor

A

Number that get divided from another number

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12
Q

Dividend

A

Number that divides into another number

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13
Q

Quotient

A

Answer to a division problem

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14
Q

Rational number

A

Numbers that can be expressed as fractions

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15
Q

Whole numbers

A

Any positive, non-fraction or non-decimal number

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16
Q

Prime numbers

A

Numbers that can be divided into itself only

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17
Q

Exponent

A

Rule to multiply that number by the exponent

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18
Q

Integer

A

Positive or negative whole number or zero

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19
Q

Real number

A

any known number on the number line

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20
Q

Rational numbers

A

Numbers that can be expressed as fractions

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21
Q

Numerator

A

Top number of a fraction

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22
Q

Denominator

A

Bottom number of a fraction

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23
Q

Proper fraction

A

Fraction where numerator is smaller than denominator

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24
Q

Improper fraction

A

opposite of proper fraction

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25
Mixed number
Whole number and a fraction Another method of writing an improper fraction
26
Greatest Common Factor (GCF)
Largest number that divides evenly into two or more numbers
27
Least common multiple
Smallest number that two or more numbers divide into evenly
28
Relatively prime
Term to describe two or more numbers whose GCF is 1
29
Lowest terms
Fraction A/B, where A & B are relatively prime
30
Reciprocal
Resulting fraction when you switch the numerator and the denominator, the reciprocal of A/B is B/A
31
Variable
Letter that takes place of a number
32
Algebraic expression
Collection of numbers and variables connected by signs and symbols
33
Term
Individual piece of an expression
34
Like terms
Terms with the same variables and same exponents
35
Equation
Two equal expression
36
Adding Fractions
Find LCD, add numerators, simplify | 1/4 + 1/6 = 3/12 + 2/12 = 5/12
37
Subtracting fractions
Find LCD, Subtract numerators, Simplify | 3 - 5 1/3 = 9/3 - 16/3 = 7/3 = 2 1/3
38
Multiplying fractions
Multiply across, then simplify
39
Division of fractions
Make second number a reciprocal and multiply | 3/4 / 7 = 3/4 / 7/1 = 3/4 x 1/7 = 3/28
40
Calculation of percent
15% of 500 is what number? 0.15 x 500 = 75 What percent of 250 is 10? 0.04
41
Convert fractions to a decimal
``` 3/125 = 125/3.000 = 0.024 1/6 = 6/1.000000 = 0.1666666666 ```
42
Estimation
Approximate value of the solution to a problem
43
Take-home pay
Add all deductions together, then subtract that total from the beginning salary
44
Roman numeral system
System of writing numbers using a combination of M, D, C, L, X, V, I
45
Roman numeral: L
50
46
Roman numeral: C
100
47
Roman numeral: D
500
48
Roman numeral: M
1,000
49
Changing roman numerals to Arabic numbers
1. From left to right, write as sum 2. Begin with largest possible value: M, D, C, L, X, V, I 3. When I, X, C is used to the left of a larger value, subtract its value from the larger value ``` Example: MCCXXXIV M = 1000 CC = 100+100 XXX = 10+10+10 IV = 5-1 = 1234 ```
50
Changing Arabic numbers to roman numerals
1. Write from left to right. 2. Take each place value and change to a Roman numeral. 3. I, X, and C may be written two or three times in a row as long as they are not followed by a larger value. 4. Use I, X, and C to the left of larger values to indicate subtraction from the larger values. 5. V, L, and D are never used to the left of a larger value. 6. V, L, and D are never used more than one time. ``` ex. Al Khwarizmi wrothe the first book of algebra in 825 C.E. Write this date in Roman numerals. 800=500+100+100, so DCCC 20=10+10, so XX 5=5, so V DCCC+XX+V=DCCCXXV ```
51
3x/5 - 2 = x + 1/3
-35/6; 3x/5 - 2 = x + 1/3 find LCD = 15; 9x/15 - 30/15 = 15x/15 + 5/15 place the x's on one side of the equation & the constants on the other; - 35/15 = 6x/15; - 35 - 6x or x = -35/6
52
298.52 / 6.8 =
43.9
53
2 1/2 x 1 1/2 = 5/2 x 3/2 = 15/4 =
3 3/4; 2 1/2 x 1 1/2 = 5/2 x 3/2 = 15/4 = 3 3/4
54
8 5/8 - 7 11/16 =
15/16; 8 5/8 - 7 11/16 = 8 10/16 - 7 11/16 = 138/16 - 123/16 = 15/16
55
Fractional Equivalent 6 2/3 =
1/15; 6 2/3 = 20/3 / 1/100 = 20/300 = (simplify) 1/15
56
Bar graph displays what?
Frequency and compares discreet data
57
Simplify; 5/6 / 9
5/54 5/6 / 9 = 5/6 x (reciprocal) 1/9 = 5/54
58
Simplify: 3 2/4 x 1 1/2 =
5 1/4 14/4 x 3/2 = 42/8 5 2/8 = 5 1/4
59
Simplify: 0.4 / 0.5 =
0. 8 | 0. 4 / 0.5 = 4 / 5 = 0.8
60
Multiplying Decimals: 5.62 x 0.3
1.686 5.62 x 0.3; 562 x 3 = 1686; There are three decimal points = 1.686
61
Compute the difference 3 - 5 1/3
-2 1/3; 3/1 = 9/3; 5 1/3 = 16/3; 9/3 - 16/3 = -7/3; -7/3 = -2 1/3
62
Simplify: 3/15 - 2/25
3/25; 3/15 x 5 = 15/75; 2/25 x 3 = 6/75; 15/75 - 6/75 = 9/75 = 3/25