Arithmetic — Mental Math

Sharpen your mental arithmetic: additions, multiplications, and subtractions with three difficulty levels.

Skills you’ll practice

Fast mental calculation and estimation
Basic facts fluency (tables, decompositions)
Confidence and speed under gentle time pressure

Strategies that help

Break down tough problems: (a+b)×c = a×c + b×c
Use friendly numbers: 19×5 = (20−1)×5 = 100−5
Check reasonableness with quick estimates

Session tips

Focus on accuracy first; only then push for speed
Alternate operations (add/mul/sub) to avoid fatigue
Short, frequent sessions beat long, rare sessions

Play Arithmetic now or learn more about our approach.