What to train
Use decomposition, compensation, and estimation.
Specific practice transfers most strongly to similar tasks; broad-transfer claims need caution.
Exercises
Increase difficulty only when accuracy is stable.
- Add 9 as +10−1.
- Multiply by 5 as half ×10.
- Treat 25% as one quarter.
- Estimate before calculating.
Sustainable routine
Use brief regular sessions, adequate sleep, movement, and recovery.
Track accuracy and difficulty rather than expecting a guaranteed IQ increase.
COMMON QUESTIONS