25.2 Students judge the validity of an argument according to whether the properties of the real number system and the order of operations have been applied correctly at each step.

Example Problems

$$-5-(3-4\cdot(-2))=$$

$$\frac{2(1-5^2)}{1-3^2}=$$

Advice

Adding and subtracting are weak.

Multiplying and dividing are strong.

Exponents are superheroes.

Practice