# Computation

### by: gregory horowitz

• 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

• 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

• 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