Freeflows
All Problems
Prealgebra
Number
Theory
Counting and Probability
Precalculus
Geometry
Algebra
Intermediate Algebra
| Status | Title | Difficulty |
| 521. Digit Sum Integer Count | Level 4 | |
| 522. Height Difference Calculation | Level 3 | |
| 523. Valid Zip Codes | Level 4 | |
| 524. Product Without Multiples | Level 3 | |
| 525. Sequence Term Count | Level 3 | |
| 526. Sale Commission Comparison | Level 5 | |
| 527. Coin Flip Probability 1 | Level 4 | |
| 528. Ice Cream Cost Calculation | Level 4 | |
| 529. Algebraic Equation Solution 3 | Level 5 | |
| 530. Prime Digit Integer Count | Level 5 | |
| 531. Yard to Inches Conversion | Level 3 | |
| 532. Yarn Division Calculation | Level 2 | |
| 533. Common Divisor Calculation | Level 3 | |
| 534. Divisible by Eight Probability | Level 5 | |
| 535. Nested Boxes Count | Level 4 | |
| 536. Fraction Simplification 5 | Level 1 | |
| 537. Percentage Calculation 1 | Level 2 | |
| 538. Radical Simplification 3 | Level 5 | |
| 539. Inequality Solution Count 1 | Level 4 | |
| 540. LCM and GCD Relation | Level 4 |