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13 Cards in this Set
 Front
 Back
Mean 
The average. The arithmetic mean. 

Median 
The middle number. Order numbers from least to greatest and find the middle number. If there's an even number then take the mean of the two middle numbers. 

Mode 
The number that shows up the most in the data. 

Long division 
Work left to right 

Multiplying decimals 
Multiply to make them whole numbers. Count the number of decimal points that the two numbers were moved by. Add this number of decimal points back to get the final answer. 

Proper fraction 
Under 1 in total. 1/2, 3/4, 7/11, 3/9 etc. 

Improper fraction 
Over 1 in total. 7/5, 6/4, 9/5 etc. 

Absolute value x 
The distance from x to zero. 5 = 5 5 = 5 

Mixed Number 
Whole number and fraction 

Converting decimal to fraction 
Find the highest number place, rewrite then simplify if possible 

First twelve prime numbers 
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37 

Multiplying fractions 
Multiply the numerators, then multiply the denominators. Simplify if possible 

Multiplying a fraction by a whole number 
Multiply the numerator, keep the denominator the same. 