Computation
by: gregory horowitz
add/subtract integers
- draw your chart
- fill in any numbers on the appropriate team
- find out the total number on each team
- circle the winning team
- same sign add them opposite sign subtract
- keep the sign of the winning team
multiplying and dividing integers
- usa madman ( a face with the eyes negative signs and the nose a plus sign)
- circle the signs in your problem ( the numbers being positive or negative NOT the ADD OR SUBTRACT)
- circle the eyes if there are two negatives or one eye and the mouth if there is a positive and a negative
- what ever sign is left not circled in the face shows you if the answer is positive or negative
adding and subtracting decimals
- line up the decimal
- fill any empty spots with zero
- add or subtract like normal
- bring the decimal down
multiplying decimals
- multiply like normal (you do not line up the decimals)
- count the place values from the factors
- move the product decimal the same amount for all the factor decimal places
dividing decimals
- move the divisor all the way to the right ( divisor - number outside or the house in the problem )
- move divined decimal the same amount as the divisor ( divined - number inside of the house in the problem )
- divide like normal
- move the decimal up
adding and subtracting fractions
- change the fraction to improper
- make a common denominator ( denominator - bottom number in a fraction )
- add or subtract the numerator ( numerator - top number in a fraction )
- simplify
multiplying fractions
- change the fractions to improper
- multiply the numerators across
- multiply the denominators across
- simplify
dividing fractions
- change the fraction to improper
- write the problem landscape
- K.F.C. ( K - keep the first fraction the same, F - flip the second from to a proper fraction, C - change to multiplication )
- simplify