Multiply the top numbers of each fraction together. This result becomes the new numerator. Example: For , calculate
Reduce the fraction to its simplest form by dividing both the numerator and denominator by their greatest common factor (GCF). Example: 3153 over 15 end-fraction can be simplified to 15one-fifth by dividing both by 3. Special Cases how to multiply fractions
To convert, multiply the whole number by the denominator and add the numerator. Multiply the top numbers of each fraction together
: You must convert mixed numbers into improper fractions before multiplying. Example: 3153 over 15 end-fraction can be simplified
Multiply the bottom numbers of each fraction together. This result becomes the new denominator. Example: For , calculate
: Treat whole numbers as fractions with a denominator of 1 (e.g., ) before following the standard steps.
ab×cd=a×cb×da over b end-fraction cross c over d end-fraction equals the fraction with numerator a cross c and denominator b cross d end-fraction Math Antics - Multiplying Fractions