convert: 5/16 to decimal fraction 0.1875 62 2/3 43 3/5 126 15/16 Convert decimal fraction to common fraction 23.8 51.09375 15. Round off answers to 3 decimal places or thousandths: (5.638+.05327) / 2.63 = (6.4/2.2 X 0.03) + 8.004 = (48.1 - 30.006) [(128.8 +2.564)/(3.09 -0.58)] 16. a. What is 20% of 3,560? b. 6.5% of 645? c. 125% of 865? d. what % of 640 is 40? e. 144 is 15% of what number? f. 331.768 is 22.6% of what number? 17. a. convert 39% to a decimal fraction b. convert 3/8 to a percent c. convert 180% to a common fraction d. convert 65% to a common fraction