Question

Select the number property that will justify the step in the following expression.
6 + (14 + 70) =

(6 + 14) + 70 = Identity-Addition, Transitive, Commutative-Addition, Associative-Addition

20 + 70 = 90

Answer 1

Associative addition
should google each of them to see some examples

Answer 2

Identity-Addition: a + 0 = a
Transitive Property: If a = b, and b = c, then a = c
Commutative-Addition: a + b = b + a
Associative-Addition: a + (b + c) = (a + b) + c
Can you choose now?

Answer 3

i agree to get (6 + 14) + 70 = from 6 + (14 + 70) you must used associative addition