standard_description: Represent addition, subtraction, multiplication, and conjugation of complex numbers geometrically on the complex plane; use properties of this representation for computation. For example, (-1 + Ö3i)^(3) = 8 because (-1 + Ö3i) has modulus 2 and argument 120°.
problem_activity: Task
Solve each problem using pictures and using a number sentence involving division.
How many fives are in 15?
How many halves are in 3?
How many sixths are in 4?
How many two-thirds are in 2?
How many three-fourths are in 2?
How many $\frac16$’s are in $\frac13$?
How many $\frac16$’s are in $\frac23$?
How many $\frac14$’s are in $\frac23$?
How many $\frac{5}{12}$’s are in $\frac12$?


aligns: no