1. 4/5 + 8/9 a. about 1 1/2b. about 1 3/4c. about 1 8/9d. about 22.17/18 - 3/7a. about 1/4b. about 1/2c. about 0d. about 13.5*2 3/5a. about 10b. about 10 3/5c. about 12d. about 154.25 7/8 ÷ 2 8/9a. about 9b. about 10c. about 11d. about 125. mr. garcia's class ate 3 2/3 pizzas, mrs. rizzoli's class ate 4 1/8 pizzas, and mrs. tidal's class ate 3 1/4 pizzas. estimate the total number eaten by all three classes. a. about 9b. about 10c. about 11d. about 12