Games like Simple Math, or NOT?

Here are some great alternatives to Simple Math, or NOT? by Fragile Software :
Go Math - Learn Math with Math
Go Math - Learn Math with Math
★4.3
Mathed : Fun Maths
Mathed : Fun Maths
★3.8
Math Games
Math Games
★4.1
Fast Math
Fast Math
★3.3
Math Games
Math Games
★4.2
Math Games Free Time - Try Out
Math Games Free Time - Try Out
★3.8
Math Facts
Math Facts
★4.4
Math Logic - Classic Puzzle
Math Logic - Classic Puzzle
★4.2
Easy Math - Play & Learn Math
Easy Math - Play & Learn Math
★4.6
Learn Math : mental arithmetic
Learn Math : mental arithmetic
★3.8
Math Puzzles - Number Games
Math Puzzles - Number Games
★4.7
Math Flash Cards
Math Flash Cards
★4.3
Math Machine: A Mental Math Pu
Math Machine: A Mental Math Pu
★4.0
Preschool Math games for kids
Preschool Math games for kids
★4.1
Easy Math Learning
Easy Math Learning
★4.2
Learn Math - 100 Languages
Learn Math - 100 Languages
★4.7