Speed Maths

https://www.facebook.com/events/784278738330010/?ref_notif_type=plan_user_joined&source=1

http://www.mathsonline.com.au/games/speed_skills

http://www.lazymaths.com/speed-math/

http://www.mathsisfun.com/games/speed-math.html

http://www.mathsisfun.com/games/speed-math.html

http://www.calculationrankings.com/

http://www.speed-math.com/

http://arithmetic.zetamac.com/

http://arithmetic.zetamac.com/

http://mrnussbaum.com/speed-math-addition-practice/