Percent
https://www.mathgoodies.com/games/conversions
https://www.free-training-tutorial.com/percentage/towncreator/tc-percentage.html
https://www.funbrain.com/games/penguin-waiter
https://www.quia.com/cb/34887.html
Albegra
https://www.mathgames.com/skill/7.150-solve-two-step-linear-equations
http://www.shodor.org/interactivate/activities/AlgebraFour/
(choose one-step or two-step)
https://reviewgamezone.com/games4/snow.php?test_id=5754&title=Two%20Step%20Equations
https://reviewgamezone.com/games4/ants.php?test_id=5754&title=Two%20Step%20Equations
https://reviewgamezone.com/games4/paperbird.php?test_id=5754&title=Two%20Step%20Equations
https://reviewgamezone.com/games4/taxi.php?test_id=5754&title=Two%20Step%20Equations
https://reviewgamezone.com/games4/free-kick.php?test_id=5754&title=Two%20Step%20Equations
https://www.mathplayground.com/ASB_Speedway.html
other sites
https://www.mathplayground.com/monster_stroll_fractions.html
https://www.mathplayground.com/math_monster_fractions.html
https://www.mathplayground.com/galaxypalsfractions.html