1, unit price × quantity = total price.
2. Single output × quantity = total output.
3. Speed × time = distance.
4. Work efficiency x time = total workload.
5. Appendix+Appendix = sum.
6, one addend = and-the other addend.
Mathematics [English: Mathematics, derived from the ancient Greek μ _ θ η μ α (má th ē ma); Often abbreviated as math or maths], it is a discipline that studies concepts such as quantity, structure, change, space and information.