1.	Simplify 1 Simplify the following expression: $$ 2(-4)(-3)\left(-5\times5 - \left(1 + -1\right)\right) $$ Correct Answer $$ -600$$ or -600.000

2.	Simplify 2 Simplify the following expression: $$ \frac{5(-3) - 5\times3}{2\frac{6}{1}} $$ Correct Answer $$ \frac{-5}{2}$$ or -2.50000

3.	Fractions 1 Simplify the following expression: $$ \frac{4}{3} + \frac{1}{4} $$ Correct Answer $$ \frac{19}{12}$$ or 1.5833333333333333

4.	Fractions 2 Simplify the following expression: $$ \frac{-4}{6}\frac{2}{4} $$ Correct Answer $$ \frac{-1}{3}$$ or -0.3333333333333333

5.	Significant figures 1. Write the following to 4 significant figures: 204.32401 Correct Answer 204.3 or $$2.043\times10^{2}$$ 2. Write the following to 4 significant figures: 0.000021148401 Correct Answer 0.00002115 or $$2.115\times10^{-5}$$

6.	Standard Form 1. Write the following in standard form to 2 significant digits: 243.642 Correct Answer $$2.4\times10^{2}$$ 2. Write the following in standard form to 2 significant digits: 2882.74 Correct Answer $$2.9\times10^{3}$$

7.	Significant figures 1. Write the following in preferred standard form to 2 significant digits: 9493 Correct Answer $$9.5\times10^{3}$$ 2. Write the following in preferred standard form to 5 significant digits: 0.7411325 Correct Answer $$741.13\times10^{-3}$$

8.	Simplify 2 Simplify the following expression: $$ \frac{{\left(5 - 2\right)}^{2}}{\left(-6 + -2\right)\left(-1 - -2\right)} $$ Correct Answer $$ \frac{-9}{8}$$ or -1.12500

9.	Simplify 1 Simplify the following expression: $$ {\left(4 - -5\right)}^{2} + \left(4 - -5\right)\left(-5 - 1\right) $$ Correct Answer $$ 27$$ or 27.0000

10.	Simplify 2 Simplify the following expression: $$ {\left(-4 - 2\right)}^{2} + \frac{-2 - 1}{-4 + -4} $$ Correct Answer $$ \frac{291}{8}$$ or 36.3750