options: Apply and extend previous understandings of multiplication and division to divide fractions by fractions.

Perform operations on vectors.

Compute fluently with multi-digit numbers and find common factors and multiples.

Represent and model with vector quantities.

Extend the properties of exponents to rational exponents.

Perform operations on matrices and use matrices in applications.

Use complex numbers in polynomial identities and equations.

Represent complex numbers and their operations on the complex plane.

Use properties of rational and irrational numbers.

Apply and extend previous understandings of numbers to the system of rational numbers.

Perform arithmetic operations with complex numbers.

Know that there are numbers that are not rational, and approximate them by rational numbers.

Reason quantitatively and use units to solve problems.

Apply and extend previous understandings of operations with fractions to add, subtract, multiply, and divide rational numbers.
problem_activity: Problem 1
Circle the expressions below that have a value of 2.
$${8+ (-6)}$$
$${6-8}$$
$${-{8-6}}$$
$${-8+(-6)}$$
$${8-6}$$
$${-6+8}$$
$${-8+6}$$
$${-6 - (-8)}$$
Problem 2
Rewrite each subtraction problem as an addition problem and each addition problem as a subtraction problem.
a.
$${-8-7}$$
b.
$${11+(-3)}$$
c.
$${20-(-2)}$$
d.
$${-4 + 16}$$


correct_option_index: 13