Question

Erin is going to sew a jacket and a skirt. She needs 2 3/4 yards of material for the jacket and 1 1/2 yards of material for the skirt. Altogether, how many yards of material does Erin need?

Answer 1

you add the fractions.

turn it into an improper fraction. you multiply the whole number by the denominator then add the numerator, leaving it over the original denominator.
eg/ 2×4= 8 +3 = 11/4
1×2= 2 +1 = 3/4


find a common denominator.
eg/ 2 and 4 have the common denominator of 4.

then you make the denominators the same.
eg/ 3/2 × 2 = 6/4

add them.
eg/ 11/4 + 6/4 = 17/4

lowest terms.
eg/ 4 1/4