| 100190 | Complex Numbers · Exercise 9 | Easy | |
| 100191 | Complex Numbers · Exercise 10 | Easy | |
| 100192 | Complex Numbers · Exercise 11 | Easy | |
| 100193 | Complex Numbers · Exercise 12 | Easy | |
| 100194 | Complex Numbers · Exercise 13 | Easy | |
| 100195 | Complex Numbers · Exercise 14 | Easy | |
| 100196 | Complex Numbers · Exercise 15 | Easy | |
| 100197 | Complex Numbers · Exercise 16 | Easy | |
| 100198 | Complex Numbers · Exercise 17 | Easy | |
| 100199 | Complex Numbers · Exercise 18 | Easy | |
| 100200 | Complex Numbers · Exercise 19 | Easy | |
| 100203 | Plotting a Complex Number on the Complex Plane | Easy | |
| 100204 | Complex Numbers · Try It 2 | Easy | |
| 100217 | Complex Numbers · Exercise 21 | Easy | |
| 100219 | Complex Numbers · Exercise 23 | Easy | |
| 100221 | Complex Numbers · Exercise 25 | Medium | |
| 100223 | Complex Numbers · Exercise 27 | Medium | |
| 100225 | Complex Numbers · Exercise 29 | Medium | |
| 100226 | Complex Numbers · Exercise 30 | Medium | |
| 100227 | Complex Numbers · Exercise 31 | Medium | |
| 100228 | Complex Numbers · Exercise 33 | Medium | |
| 100230 | Complex Numbers · Exercise 35 | Medium | |
| 100232 | Complex Numbers · Exercise 37 | Medium | |
| 100234 | Complex Numbers · Exercise 39 | Medium | |
| 100236 | Complex Numbers · Exercise 41 | Medium | |
| 100239 | Complex Numbers · Exercise 45 | Medium | |
| 100241 | Complex Numbers · Exercise 47 | Medium | |
| 100243 | Complex Numbers · Exercise 49 | Medium | |
| 100245 | Complex Numbers · Exercise 51 | Medium | |
| 100247 | Complex Numbers · Exercise 53 | Medium | |
| 100249 | Complex Numbers · Exercise 55 | Medium | |
| 100251 | Complex Numbers · Exercise 57 | Medium | |
| 100253 | Complex Numbers · Exercise 59 | Medium | |
| 100255 | Complex Numbers · Exercise 61 | Medium | |
| 100257 | Complex Numbers · Exercise 63 | Medium | |
| 100259 | Complex Numbers · Exercise 65 | Medium | |
| 100261 | Complex Numbers · Exercise 67 | Deep | |
| 100263 | Complex Numbers · Exercise 69 | Deep | |
| 100265 | Complex Numbers · Exercise 71 | Deep | |
| 100267 | Complex Numbers · Exercise 73 | Deep | |
| 100269 | Complex Numbers · Exercise 75 | Deep | |
| 107126 | Substituting a Complex Number into a Polynomial Function | Easy | |
| 107132 | Complex Numbers · Exercise 6 | Medium | |
| 107134 | Complex Numbers · Exercise 8 | Medium | |
| 107136 | Complex Numbers · Exercise 10 | Medium | |
| 107137 | Complex Numbers · Exercise 44 | Medium | |
| 107139 | Complex Numbers · Exercise 46 | Medium | |
| 125733 | Use the Complex Number System · Example 6 | Easy | |
| 125745 | Use the Complex Number System · Example 10 | Easy | |
| 125748 | Use the Complex Number System · Example 11 | Easy | |