Calculate depreciation for 2018 and 2019 using each of the following methods. Partial-year depreciation is calculated based on the number of months the asset is in service. 1. Straight line. 2. Sum-of-the-years’-digits. 3. Double-declining balance. 4. One hundred fifty percent declining balance. 5. Units of production (units produced in 2018, 28,000; units produced in 2019, 43,000).