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This work experimentally evaluated the performance of quantum adders on various IBM quantum hardware. The authors have constructed quantum circuits for one-qubit and two-qubit quantum adders using Quantum Information Science Kit (Qiskit) and run the circuit on seven IBM quantum devices: YorkTown, Ourense, Valencia, Santiago, Athens, Vigo and Melbourne. A detailed experimental analysis of accuracy rate of seven IBM devices are reported in this work. Experimental analysis shows that IBM Athens (5 qubits) provides the best accuracy results (73.7%) in comparison to high-qubit IBM Melbourne (15 qubits) for one-qubit quantum adder. Experimental analysis shows that IBM Melbourne (15 qubits), the only real IBM quantum hardware presently available with qubits higher than 5 qubits, provides an accuracy of 12.8125% over the ideal simulator.