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73 Cards in this Set
- Front
- Back
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odd + odd |
even |
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even + even |
even |
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odd + even |
odd |
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odd x odd |
odd |
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odd x even |
even |
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even x even |
even |
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integer is divisible by 2 if... |
last digit is divisible by 2 |
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integer is divisible by 3 if... |
digits add up to a multiple of 3 |
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integer is divisible by 4 if... |
last 2 digits are a multiple of 4 |
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integer is divisible by 5 if... |
last digit is 0 or 5 |
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integer is divisible by 6 if... |
if it's divisible by both 2 and 3 |
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integer is divisible by 9 if... |
it's digits add up to a multiple of 9 |
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factor |
AKA divisor. positive integers by which the integer is evenly divisible |
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multiple |
product of the integer and another number |
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raising an even number to any power |
even number |
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raising an odd number to any power |
odd number |
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raising a fraction between 0-1 to any power |
smaller number |
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(3^2)(5^2)= different bases same exponent |
(3*5)^2=15^2 multiply bases |
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(3^2)^4= putting a power to a power |
3^2*4= 3^8 multiply exponents |
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2^2 * 2^3= multiplying same bases |
2^2+3 = 2^5 add exponents |
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4^5/4^2= dividing same bases |
4^3 subtract exponents |
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which is bigger 5/6 or 7/9? |
5 = 7 cross multiply --> 5*9= 45 6 9 7*6= 42 45>42 so 5/6 is bigger |
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convert 2 3/7 to a fraction |
2(7) + 3 = 17 7 7 |
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reciprocal of number between 0 and 1 is less than or greater than... |
greater than original number and 1 |
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reciprocal of number between 0 and -1 is less than or greater than... |
less than original fraction and -1 |
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the square of a fraction between 0 and 1 is less than or greater than... |
less than original fraction |
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the square of a fraction between 0 and -1 is less than or greater than... |
greater than original fraction |
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multiplying any positive number by a fraction between 0 and 1 leads to... |
a product smaller than original number |
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multiplying any negative number by a fraction between 0 and 1 leads to... |
a product bigger than the original number |
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1/20 |
5% |
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1/12 |
8.33% |
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1/8 |
12.5% |
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1/6 |
16.67% |
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1/5 |
20% |
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3/8 |
37.5% |
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2/5 |
40% |
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3/5 |
60% |
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5/8 |
62.5%
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4/5 |
80% |
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5/6 |
83.33% |
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7/8 |
87.5% |
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11/12 |
91.67% |
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percent increase= |
increase(100%) original |
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% of the selling price that's profit= |
profit original selling price |
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percentage discount= |
discount (100%) original price |
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rate formula |
time=quantity rate |
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combined rates |
time = total quantity rate 1 + rate 2 |
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work formula |
1 + 1 + 1= 1 a b c T |
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simplified work formula for 2 |
T = ab a + b |
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when can you average averages? |
when there's an equal number of terms in each set |
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when do you need to switch the inequality sign? |
when you multiply or divide inequality by negative number |
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combination formula |
n! k! (n-k)! |
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how many groups can be formed consisting of 2 people from room A and 6 people from room B if there are 5 ppl in room A and 6 ppl in room B |
200 possible groups |
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what do you know about 3rd side of triangle if you know 2 sides |
the 3rd side must be between positive difference and sum of the 2 other sides |
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The average of consecutive integers= |
average of the smallest and largest integers |
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3 exterior angles of a triangle= |
360 degrees |
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2 sides added together is always bigger/smaller than last side? |
bigger |
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hypotenuse of right triangle with legs 3 and 4= |
5 |
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sides of 60/30 right triangle |
legs: x, x root 3 hypotenuse: 2x |
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sides of 45/45 right triangle |
legs: x, x hypotenuse: x root 2 |
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4 angles in quadrilateral= |
360 degrees |
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area of parallelogram= |
b*h |
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degrees of arc= |
degrees of central angle |
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arc length= |
n degrees * circumference 360 |
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area of sector= |
n degrees * area of circle 360 |
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surface area of rectangular solid= |
2lw +2lh + 2hw |
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volume of cube= |
edge^3 |
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surface area of cube= |
6edge^3
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volume of a cylinder= |
area of base * height |
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lateral surface area of cylinder= |
circumference of base * height |
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total surface area of cylinder= |
area of bases + lateral surface area |
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hypotenuse of 5, 12 right triangle= |
13 |
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B has 3 dollars more than twice the number of dollars A has= |
2A+3=B |
