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Math Middle School Review

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
How do you add/subtract fractions?   show
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show Make Improper - Multiply Across - Simplify  
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How do you divide fractions?   show
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How do you multiply decimals?   show
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show Line up decimal places - add zeroes in empty spots - add/subtract like normal  
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show Divide by 100 or move decimal 2 spots left  
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How do you change decimal into %?   show
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How do you change % into a fraction?   show
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How do you change a fraction into a decimal?   show
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show Find the change by subtraction - divide by the original amount - convert into % form  
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show Part/Base = %/100  
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show Set up 2 fractions (make unknown on top) - multiply both sides by bot term - include units  
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How do you find percent given part and base?   show
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show Change % to decimal - multiply by base  
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show Divide part by percent and multiply by 100  
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show Change % to decimal - multiply by cost - add/subtract to find total cost  
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show Move decimal between 1st two digits - count spots moved and that is exponent of the 10  
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How do you change a number from scientific notation?   show
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show Add numbers and divide by how many there are  
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How do you find mode of a data set?   show
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How do you find range of a data set?   show
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show Write fraction with units - set it equal to fraction over 1 - divide to find top value  
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show I = Prt - P-money start with, r-rate as decimal, t-time in years  
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show Fraction where you put outcomes of success over total possible outcomes  
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How do you find the probability of multiple events?   show
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show Multiply/divide like normal - add sign where same signs make positive / different negative  
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How do you find area of a circle?   show
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show Area = length x width = l x w  
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show Area = 1/2 x base x height = 1/2 x b x h remember base and height are perpendicular  
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How do you find perimeter of a shape?   show
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show C = pi x diameter = pi x 2 x radius  
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How do you find volume of a prism?   show
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show V = 1/3 x area of base x depth = 1/3 x A x d  
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show Add areas of each face together  
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Created by: phillipds
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