Here is the full list of all 16 Quick Maths: addition and subtraction achievements.
Play in addition
Play in subtraction
Play in both mode
Play competetive 30s
Play competetive 1m
Play competetive 3m
Play competetive 5m
Train your skills
Play in the range 1-10
Play in the range 10-100
Play in the range 100-1000
Play in the range 1000-10000
Play 1 compete match
Play 5 compete match
Play 10 compete match
Play 25 compete match