| 100070 | Linear Equations in One Variable · Exercise 47 | Medium | |
| 100072 | Linear Equations in One Variable · Exercise 49 | Medium | |
| 100074 | Linear Equations in One Variable · Exercise 51 | Medium | |
| 100076 | Linear Equations in One Variable · Exercise 53 | Medium | |
| 100077 | Linear Equations in One Variable · Exercise 54 | Medium | |
| 100078 | Linear Equations in One Variable · Exercise 55 | Medium | |
| 100079 | Linear Equations in One Variable · Exercise 56 | Medium | |
| 100080 | Linear Equations in One Variable · Exercise 57 | Medium | |
| 100082 | Linear Equations in One Variable · Exercise 59 | Medium | |
| 100084 | Linear Equations in One Variable · Exercise 61 | Medium | |
| 100086 | Linear Equations in One Variable · Exercise 63 | Medium | |
| 100087 | Linear Equations in One Variable · Exercise 64 | Medium | |
| 100088 | Linear Equations in One Variable · Exercise 65 | Medium | |
| 100089 | Linear Equations in One Variable · Exercise 66 | Medium | |
| 100095 | Linear Equations in One Variable · Exercise 73 | Medium | |
| 100097 | Linear Equations in One Variable · Exercise 75 | Medium | |
| 100131 | Models and Applications · Exercise 22 | Medium | |
| 100133 | Models and Applications · Exercise 24 | Medium | |
| 100135 | Models and Applications · Exercise 26 | Medium | |
| 100137 | Models and Applications · Exercise 28 | Medium | |
| 100139 | Models and Applications · Exercise 30 | Medium | |
| 100141 | Models and Applications · Exercise 32 | Medium | |
| 100143 | Models and Applications · Exercise 34 | Medium | |
| 100145 | Models and Applications · Exercise 36 | Medium | |
| 100147 | Models and Applications · Exercise 38 | Medium | |
| 100149 | Models and Applications · Exercise 40 | Medium | |
| 100151 | Models and Applications · Exercise 42 | Medium | |
| 100153 | Models and Applications · Exercise 44 | Medium | |
| 100155 | Models and Applications · Exercise 46 | Medium | |
| 100157 | Models and Applications · Exercise 48 | Medium | |
| 100159 | Models and Applications · Exercise 50 | Medium | |
| 100161 | Models and Applications · Exercise 52 | Medium | |
| 100163 | Models and Applications · Exercise 54 | Medium | |
| 100165 | Models and Applications · Exercise 56 | Medium | |
| 100167 | Models and Applications · Exercise 58 | Medium | |
| 100168 | Models and Applications · Exercise 59 | Medium | |
| 100169 | Models and Applications · Exercise 60 | Medium | |
| 100171 | Models and Applications · Exercise 62 | Medium | |
| 100173 | Models and Applications · Exercise 64 | Medium | |
| 100175 | Models and Applications · Exercise 66 | Medium | |
| 100177 | Models and Applications · Exercise 68 | Medium | |
| 100179 | Models and Applications · Exercise 70 | Medium | |
| 100386 | Other Types of Equations · Exercise 6 | Medium | |
| 100388 | Other Types of Equations · Exercise 8 | Medium | |
| 100390 | Other Types of Equations · Exercise 10 | Medium | |
| 100392 | Other Types of Equations · Exercise 12 | Medium | |
| 100394 | Other Types of Equations · Exercise 14 | Medium | |
| 100396 | Other Types of Equations · Exercise 16 | Medium | |
| 100398 | Other Types of Equations · Exercise 18 | Medium | |
| 100400 | Other Types of Equations · Exercise 20 | Medium | |