During my exam preparation I faced many challenges for boosting my calculation speed in Quantitative Aptitude. But after practice I have improved my calculation speed. Here some steps have been mentioned which I followed -

1- Learn table , squares, cubes and its roots.
2- Try to sum , division, multiplication , subtraction in mind without using pen .
3- Use any quiz app daily for 10 -15 minutes.
4- If you are free then randomly choose some numbers and calculate it.
these some points which may help you to enhance your speed.

    AbhishekGoyal
    mai jab bhi bahar jata hu random jo bhi no. dikhte hai unme kuch bhi multiply ya sum krke result cross check karta hu

    8 days later