Answer:Let's convert each decimal to a fraction:1. 0.7 = 7/102. 2.25 = 2 + 25/100 = 2 + 1/4 = 9/43. 0.325 = 325/1000 = 13/404. 0.1.23 appears to be a typo or misformatted number, but if it is intended as 0.123, then it equals 123/1000.5. 3.521 = 3 + 521/1000 = (3000 + 521)/1000 = 3521/1000Therefore, the decimal numbers converted into fractions are:1. 7/102. 9/43. 13/404. 123/1000 (assuming the intended number)5. 3521/1000.Step-by-step explanation: