First are you in connections academy? I am, I had this disscussion before. Addition:John asks for 2/8 of Riley's cake. Jake gives John 3/6 of his cake. How much cake does John have all together? 2/8+3/6=3/4. 3/4ths in the decimal form is 0.75. That is a Terminating decimal. Subtraction:Chris threw away 7/12 of his pizza. His buddy James threw away 5/8 of his pizza.How much pizza did they throw away? 7/12-5/8=-1/24. the decimal form is:0.041666667. Hope That helps!!!! :)