2.1 adding rational numbers

Question 1

additive inverse

Answer 1

the opposite of a number

Question 2

matrix

Answer 2

a rectangular arrangement of numbers in rows and columns

Question 3

element

Answer 3

each item in a matrix

Question 4

identify property of addition

Answer 4

for every real number n, n + 0 = n and 0 + n = n

Question 5

inverse property of addition