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48 Cards in this Set
- Front
- Back
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pos x pos =
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pos
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pos x neg =
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neg
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neg x neg =
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pos
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even + even =
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even
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odd + odd =
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even
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even + odd =
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odd
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0.2=
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1/5
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0.25=
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1/4
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0.33=
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1/3
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0.40=
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2/5
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0.5=
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1/2
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0.6=
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3/5
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0.66=
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2/3
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0.75=
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3/4
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0.8=
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4/5
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1/6=
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16.6%
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1/7=
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14%
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1/8=
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12.5%
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1/9=
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11%
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how do u easily convert a fraction into a percent?
3/25 |
You multiply the denominator to equal 100. Then multiply the nomerator by that same number.
3x4=12 25x4=100 12% |
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what can u tell me about a set?
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The numbers in a set are placed in increasing order.
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definition of median.
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The middle number in a set of #.
Found by putting numbers in order then crossing off # at each end until u get the middle number. |
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find if x/14 is an integer?
what is the formula. |
1. First find the factors of 14.
2. Then find the factors of the number it is divisible by. 3. If they both have the same factors then x is an integer. |
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How can you determine if a variable with an exponent will be positive or negative. When u know the variable is not zero.
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If the variable has an even exponent then the variable is definitely POSITIVE.
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How to tell if a variable with an odd # exponent is positive or negative.
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You can't......
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how would u write a formula for a set of numbers that increases by even numbers.
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x, x+2, x+4, x+6, x+8. etc.
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how do u make this equation so you can solve it?
x^2+5x=9 |
Subtract 9 from both sides.
x^2+5x-9=0 Then work problem as normal. |
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how should u approach a problem that "x% of y is increased by x%. What is the result in terms of x and y?"
And u have formulas as answers |
VIC. Make up relavent numbers and get an answer for the question. Then use those VIC numbers and insert them into the questions and solve. You should get the same answer as you did when solving the orginal problem.
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name first ten prime numbers?
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2. 3. 5. 7. 11. 13. 17. 19. 23. 29
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find GFC
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make prime box.
find common factors then multiply them together. |
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find LCM
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make prime box.
take greater # of common numbers from each side then multiply. |
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what gives you an odd or even number in addition/subtraction?
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add 2 odds
subtract 2 evens =even add an odd with an even and oh how odd it shall be. |
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will a number be odd or even in a multiplication set? what the rule.
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Just one even in a multiplication set and an even you will get,
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the sum of two prime numbers will be? (other than two)
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even.
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odd x odd =?
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odd
odd x even = even odd x odd x even x odd = even |
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how many integers are there from x to y?
This is always inclusive. |
y - x + 1 =
add one before your done. |
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what is the sum of consec integers?
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1. find the average. by adding the two numbers up then divide it by 2.
2. find # of terms. 3. multiply the # of terms and the average. |
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average term in a consec set.
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add the two numbers and divide by two.
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special products rule.
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the product of x consec integers is a multiple of x.
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special sums rule.
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the sum of x consec terms are divisible by x.
This is only true for odd terms. |
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rules of combining exponential expressions.
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1. u can only combine exponential expressions that are linked by multiplication or division.
2. must have either a base or exponent in common. |
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how do you combine an exponential expression with the same base that is being multiplied?
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add the exponents together and keep the base.
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how do you combine an exponential expression with a common exponent thats being multiplied?
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multiply the base and keep the common exponent.
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how do you combine an exponential expression with the same base that is being multiplied?
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subtract the exponents and keep the common base.
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how do you combine an exponential expression with common exponent that is being multiplied.
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divide the bases and keep the exponent.
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x^2 - x ^2 =
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find x squared, and x squared then subtract the integers.
same for addition. |
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(x^2)^4
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multiply 2 and 4.
x^8 |
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List all prime numbers from 2 to 100.
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2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
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