2.1 Adding rational numbers

Question 1

Additive inverse

Answer 1

a number when added yields zero.

Question 2

identity property of addition

Answer 2

adding 0 to any number, results in the number itself.

Question 3

inverse property of addition

Answer 3

the sum of a number and its opposites is always 0.

Question 4

matrix

Answer 4

an arrangement of numbers into rows and columns.

Question 5

element

Answer 5

Each object that belongs to a set. .