What property of addition is shown in this number sentence? 355 + ____= 169 + 355
What is the sum of 8 + 9 + 3?
Which equation shows the identity property of addition?
Which property is shown by 3 + 4 = 4 + 3?
(5 + 2) + 3 equals 5 + (2 + 3). Which property?