Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

G-M > Essential of Quant Skills > Flashcards

Essential of Quant Skills Flashcards

1
Q

Lowest Common Denominator

A

Smallest non-zero integer that will divide all

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cross Out

A

Try to cancel numerator and denominator as much as possible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

(a/b)+(c/b)

A

(a+c)/b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

If (a/b)+(c/d)

A

(ad+bc)/bc -> cross multiple

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Cross cancel

A

works for multiplication and not addition and subtraction and divisions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

(a/b)/(c/d)

A

(ad/bc) -> (outsideoutside)/(insideinside)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Comapring Fractions

A

Have a reference point (let’s say 1/2) and you say you are more or less than that 1/2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Comapre a/b and c/d

A

ad > bc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

1/(a/b)

A

b/a -> 1 divided by a fraction is b/a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

One way of comapring the fractions

A

Make all the numerator same > larger denomintor smaller the number (3/2)>(3/4)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Second way of comapring the fractions

A

Make all the denominator same

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Multiplying or dividing both the numerator and denominator by a non-zero

A

Will not change the value of the fractions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Adding or subtracting the numerator and denominator by a non-zero

A

Will change the value of the fractions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Fraction between 0 and 1 : adding to the numerator and denominator

A

make the fraction larger

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Fraction between 0 and 1 : subtracting to the numerator and denominator

A

make the fraction smaller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Fraction greater than 1 : adding to the numerator and denominator

A

make the fraction smaller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Fraction greater than 1 : subtracting to the numerator and denominator

A

make the fraction larger if it’s still postive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Decimals

A

Tenths: 0.1
Hundredths: 0.01
Thousandths: 0.001

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

To add or subtracts decimals

A

Line up the decimal points and then add or subtract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

To multiply two decimals

A

1) First ignore the decimals, treat the tow numbers and whole numbers and determine the product
2) Count the total number of the decimals to the rights of the decimals point in the number that were multiplied
3) In the product, move the decimals point to the left the same number of spaces
i. e 15.534*2.8= 4 decimals = 43495200 = 43.4952

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Rounding: If the digit to the right is less than 5

A

keep the digit in the xth place and change everything to the right in the xth place to zero
i.e: 9.746 -> 9.70

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

If the digit is 5 or greater

A

round the digit in the xth place up by 1 and change everything to the right of the xth place to a zero
Hundredth : 9.746 -> 9.75

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

x%

A

x/100

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Convert fraction to a percent

A

multiply the fraction by 100 and attach the percent sign

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Convert decimal or an integer to a percent

A

Move the decimal point two places to the right and attach the percent sign
i.e: 0.03 = 3%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Convert percent to a decimal

A

drop the percentage sign and move the decimal point two places to the left
i.e: 0.7% -> 0.007

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Converting a terminating decimals

A

A. 1 decimal : write it over 10 -> 0.3 -> 3/10
B. 2 decimal: write it over 100 -> 1.47
-> 147/100

28
Q

1/8

A
  1. 125

0thers: 3/8 -> 0.125*3

29
Q

1/2

A

0.5 ; 50%

30
Q

1/3

A

0.333; 33%

31
Q

1/4

A

0.25; 25%

32
Q

1/5

A

0.2; 20%

33
Q

1/6

A

0.167; 16.7%

34
Q

1/7

A

0.143; 14.3%

35
Q

1/8

A

0.125; 12.5%

36
Q

1/9

A

0.111; 11%

37
Q

1/10

A

0.1; 10%

38
Q

Square root of number except for rad 0

A

Always positive

39
Q

If b ≠ 0, then (a/b)^2

A

a^2/b^2

40
Q

If x ≥ 0 and y >0, then rad(x/y)

A

rad x/ rad y

41
Q

If 0

A

x^2 < x < rad x

42
Q

Bigger the number, bigger the result when square rooting

A

0.990^2 > 0.9099^2 > 0.9090^2

43
Q

Estimation

A

When estimating, try to round to the whole/ easier #

i.e = (2013^2)/(20.5 199^2) = (2000)^2/(20(200^2)

44
Q

Perfect square never end in

A

2
3
7
8

45
Q

Perfect square end in

A 
0
1
4
5
6
9
46
Q

Number Line: number on the right

A

always greater than number on the left

47
Q

Number line: If the two number are negative

A

The farther away the number is from the number 0, the small its value and the closer the number is to 0, the larger its value

48
Q

Comparing the negative fractions

A

First treat them as normal and switch the sign after you make that change

49
Q

PEDMAS

A

Follow PEDMAS and absolute value have the same priority as parentheses and square root also act like parentheses

50
Q

PEDMAS in fraction

A

First take care of the top part and then look at the bottom and stuff

51
Q

Commutative property

A

a+b = b+a

52
Q

Associative property

A

(a+b)+c = a+(b+c)

53
Q

When we have a sequence of number

A

add them in any order we want

54
Q

Commutative property of multiplication

A

ab = ba

55
Q

Associative property of multiplication

A

(ab)c = a(bc)

56
Q

When we have a sequence of number of multiplication

A

multiply them in any order we want

57
Q

Distributive Property of multiplication

A

a(b+c)= ab+a*c

58
Q

(b+c)*a

A

ba+ca

59
Q

a(b+c+d)

A

ab+ac+ad

60
Q

a(b-c)

A

ab-ac

61
Q

Common factor

A

Always be in look out to factor out common factors

62
Q

Arithmetic tricks

A 
999+578 = 1000+578-1 = 143 
1,000,000,000,000-888,888,888,888= 999,999,999,999+1- 888,888,888,888 = 111,111,111,112
63
Q

0!

A

1

64
Q

1!

A

1

65
Q

Try to factor out the factorials

A

11!+10! = 10!(11+1)

G-M (29 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions