I loved it. It just needs the one
1.0.6 r7 Nougat Compile
1.0.5 r.6 Base rebuilt: (AppCompatActivity), added swipe Place, and single click on PrimeZone.
1.0.4 r.5 Added nummolt self-reference
1.0.3 r.4 Phone not required.(attempt to be listed in tablets section if exists) + Improved general refresh.
1.0.2 r.3 Mathematical & visual concepts: Improved use of "1" in the prime zone.
1.0.1 r.2 Sweeped version.
1.0.0 r.1 First version.
Mental Math Games FREE for kids for Elementary School & Basic Math for Preschool