Mental Math (Subtraction)
98 - 8
What is 90
84 + 9
What is 93
Which Property of Addition is the following:
4 + 0 = 4
What is the Zero (Identity) Property of Addition
68 - 19
74 + 59
What is 133
Which Property of Addition is the following:
7,893,839 + 0 = 7,893,839
237 + 19
What is 256
Which Property of Addition is the following:
(4 + 3) + 8 = 4 + (3 + 8)
What is the Grouping (Associative) Property of Addition
178 - 156
What is 22
326 + 274
What is 600
Which Property of Addition is the following:
5 + 7 = 7 + 5
What is the Order (Commutative) Property of Addition
578 - 379
What is 199
938 + 181
What is 1,119
Which Property of Addition is the following:
25 + (30 + 5) = (30 + 5) + 25
What is the Order (Commutative) Property of Addition