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How do you multiply a whole number times a fraction

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2 Answers

Step 1: Put the whole number over 1 to turn it into a fraction.    (ex. 5 will become 5/1).
Step 2: Multiply across. Top number by top number (numerator) and bottom number by bottom number (denominator).
Step 3: Simplify your answer by dividing BOTH numerator and denominator by the same number, when applicable.
 
 
 
Example. 5  x  2/15
 
Step 1:  5 becomes 5/1
Step 2:  5/1 x 2/15 = 10/15
Step 3: 10/15 each can be divided by 5 to get 2/3
 
 
 
Make the whole number into a fraction.
 
E.g., 3 * 1/7 = (3/1)*(1/7) = 3*1/(1*7)
 
Basically you wind up multiplying the numerator of the fraction by the whole number.