"Use Properties to find the sum or product" 6 x 107 "Complete the equation, and tell which property you used" 1. (3 x 10) x 8 = x (10 x 8) 2. 16 + 31 = 31 + 1. "The Metro Theater has 20 rows of seats with 18 seats in a row. Tickets cost $5. The theater's income in dollars if all seats are sold is (20 x 18) x 5. Use Properties to find the total income." 2. "The numbers of students in the four sixth-grade classes at Northside School are 26, 19, 34 and 21. Use properties to find the total number of students in the four classes" 1. "To find 19 + (11 + 31), Lennie added 19 and 11. Then he added 37 to the sum. What property did he use? Please help, I have school in a couple hours-