Fractions and Proportionality Flashcards
1
Q
a/b of c/d =…
A
a/b * c/d
2
Q
a/b of c/d of e/f=…
A
a/b * c/d * e/f
3
Q
a/c=…
A
a/b * b/c
4
Q
a/d=…
A
a/b * b/c * c/d
5
Q
a/e=…
A
a/b * b/c * c/d * d/e
6
Q
What is a proportionality?
A
an equality of fractions or ratios. (ex. a : b = c : d or a/b = c/d)
7
Q
How do you solve for an unknown in a proportionality?
A
cross multiplication (ex. a/b = c/d, then a * d = b * c)
