Multiplying a fraction by a whole number:
1. multiply the numerator by the whole number
2. keep the denominator the same
3. simply your answer (Can the fraction be reduced? If the fraction is improper, make a mixed number.)
Adding fractions with unlike denominators:
1. find the lowest common multiple (LCM) of the two denominators
2. change the fractions into equivalent versions that will have matching denominators (LCM)
for example: 1/3 and 1/5 would become 5/15 and 3/15
1/3 = 5/15 1/5 = 3/15
3. add the fractions (which now have matching denominators)
4. simply your answer (Can the fraction be reduced? If the fraction is improper,
make a mixed number.)
1. multiply the numerator by the whole number
2. keep the denominator the same
3. simply your answer (Can the fraction be reduced? If the fraction is improper, make a mixed number.)
Adding fractions with unlike denominators:
1. find the lowest common multiple (LCM) of the two denominators
2. change the fractions into equivalent versions that will have matching denominators (LCM)
for example: 1/3 and 1/5 would become 5/15 and 3/15
1/3 = 5/15 1/5 = 3/15
3. add the fractions (which now have matching denominators)
4. simply your answer (Can the fraction be reduced? If the fraction is improper,
make a mixed number.)