Pakistani and Indian students once mastered the abacus and the slide rule. The pocket calculator changed exam halls forever — and not always for the better.
If you have ever stared at a number on a form and wondered where it came from, you are not alone. Pakistani and Indian students once mastered the abacus and the slide rule. The pocket calculator changed exam halls forever — and not always for the better.
Slide rules, log tables, mental arithmetic. Mathematical foundations were strong.
Scientific calculators arrive. Suddenly logarithms aren't a 30-second lookup but a 1-second tap.
Programmable models bring controversy — banned in many board exams to prevent stored notes.
Phone calculators dominate everyday use; specific approved models for board exams.
Are calculators allowed in O-levels? Yes, but specific models — typically Casio fx-83 or fx-85.
What about A-levels? Most boards allow scientific (sometimes graphing) calculators. Programmable usually banned.
Whatever number you land on, sanity-check it against a second method or a quick estimate in your head.