| 114976 | Use the Language of Algebra · Example 16 | Easy | |
| 114979 | Use the Language of Algebra · Example 17 | Easy | |
| 114982 | Use the Language of Algebra · Example 18 | Easy | |
| 114995 | Use the Language of Algebra · Exercise 11 | Easy | |
| 114997 | Use the Language of Algebra · Exercise 13 | Easy | |
| 115466 | The Real Numbers · Example 3 | Easy | |
| 115469 | The Real Numbers · Example 4 | Easy | |
| 115472 | The Real Numbers · Example 5 | Easy | |
| 115475 | The Real Numbers · Example 6 | Easy | |
| 115478 | The Real Numbers · Example 7 | Easy | |
| 115479 | The Real Numbers · Try It 13 | Easy | |
| 115480 | The Real Numbers · Try It 14 | Easy | |
| 115510 | The Real Numbers · Exercise 29 | Easy | |
| 115512 | The Real Numbers · Exercise 31 | Easy | |
| 115542 | Properties of Real Numbers · Example 1 | Easy | |
| 115545 | Properties of Real Numbers · Example 3 | Easy | |
| 115548 | Properties of Real Numbers · Example 4 | Easy | |
| 115551 | Properties of Real Numbers · Example 5 | Easy | |
| 115554 | Properties of Real Numbers · Example 6 | Easy | |
| 115557 | Properties of Real Numbers · Example 7 | Easy | |
| 115560 | Properties of Real Numbers · Example 17 | Easy | |
| 122518 | Use the Language of Algebra · Example 1 | Easy | |
| 122534 | Use the Language of Algebra · Example 10 | Easy | |
| 122535 | Use the Language of Algebra · Example 11 | Easy | |
| 122564 | Use the Language of Algebra · Exercise 43 | Easy | |
| 122566 | Use the Language of Algebra · Exercise 45 | Easy | |
| 127999 | Irrational Numbers · Example 1 | Easy | |
| 128000 | Irrational Numbers · Example 2 | Easy | |
| 128001 | Irrational Numbers · Example 3 | Easy | |
| 128002 | Irrational Numbers · Example 4 | Easy | |
| 128003 | Irrational Numbers · Example 5 | Easy | |
| 128004 | Irrational Numbers · Example 6 | Easy | |
| 128005 | Irrational Numbers · Example 7 | Easy | |
| 128006 | Irrational Numbers · Example 8 | Easy | |
| 128007 | Irrational Numbers · Example 9 | Easy | |
| 128008 | Irrational Numbers · Example 10 | Easy | |
| 128009 | Irrational Numbers · Example 11 | Easy | |
| 128010 | Irrational Numbers · Example 12 | Easy | |
| 128011 | Real Numbers · Example 1 | Easy | |
| 128012 | Real Numbers · Example 2 | Easy | |
| 128013 | Real Numbers · Example 3 | Easy | |
| 128014 | Real Numbers · Example 4 | Easy | |
| 128096 | Algebraic Expressions · Example 1 | Easy | |
| 128097 | Algebraic Expressions · Example 2 | Easy | |
| 128098 | Algebraic Expressions · Example 3 | Easy | |
| 128099 | Algebraic Expressions · Example 4 | Easy | |
| 128100 | Algebraic Expressions · Example 5 | Easy | |
| 128101 | Algebraic Expressions · Example 6 | Easy | |
| 128102 | Algebraic Expressions · Example 7 | Easy | |
| 128103 | Algebraic Expressions · Example 8 | Easy | |