MATHEMATICS OBJECTIVE

Students will be able to:

- understand subtraction of integers as adding the additive inverse, p - q = p + (-q).

- use addition and subtraction rules to solve real-world problems.

ESSENTIAL UNDERSTANDING

Subtracting a number is the same as adding that number's additive inverse.

I can use the additive inverse to subtract integers. 

I can use addition and subtraction rules to solve authentic problems. 

When subtracting integers, such as a - b, you can use the additive inverse to write subtraction as an equivalent addition expression.

Subtracting b is the same as adding the opposite of b.

a - b = a + (-b)

[Number line shows 0 and a, with a left-pointing arrow indicating subtraction.]