- Calculus prereq. (ALG with 3 letters)
- Calculus calculation (e.g. AREA with 4 letters)
- Calculus class calculation (AREA with 4 letters)
- Calculus calculations (e.g. AREAS with 5 letters)
- Calculus class calculations (AREAS with 5 letters)
- Calculus calculation: Abbr. (e.g. LIM with 3 letters)
- Calculus prerequisite (TRIG with 4 letters)
- Calculation aids (ABACI with 5 letters)
- Carbon dater's calculation (AGE with 3 letters)
- Calculation from tree rings (AGE with 3 letters)