1.	Simplify 1 Simplify the following expression: $$ \left(-4 - 1\right)\left(2 - 6\right) - {\left(5 + 2\right)}^{2} $$ Correct Answer $$ -29$$ or -29.0000

2.	Simplify 2 Simplify the following expression: $$ {\left(\frac{6}{3}\right)}^{2} + \frac{-4 + 4}{-5 + 5} $$ Correct Answer $$ \frac{0}{0}$$ or NaN

3.	Fractions 1 Simplify the following expression: $$ \frac{4}{2} - \frac{2}{3} $$ Correct Answer $$ \frac{4}{3}$$ or 1.3333333333333335

4.	Fractions 2 Simplify the following expression: $$ \frac{6}{3}\frac{3}{2} $$ Correct Answer $$ 3$$ or 3.0

5.	Significant figures 1. Write the following to 4 significant figures: 3.4950310 Correct Answer 3.495 or $$3.495\times10^{0}$$ 2. Write the following to 2 significant figures: 1.5588760 Correct Answer 1.6 or $$1.6\times10^{0}$$

6.	Standard Form 1. Write the following in standard form to 5 significant digits: 0.0000268708 Correct Answer $$2.6871\times10^{-5}$$ 2. Write the following in standard form to 3 significant digits: 25.9647 Correct Answer $$2.60\times10^{1}$$

7.	Significant figures 1. Write the following in preferred standard form to 5 significant digits: 0.0511930 Correct Answer $$51.193\times10^{-3}$$ 2. Write the following in preferred standard form to 5 significant digits: 0.0007240584 Correct Answer $$724.06\times10^{-6}$$

8.	Simplify 2 Simplify the following expression: $$ {\left(\frac{-2}{6}\right)}^{2} - \frac{2 - -1}{6 + 6} $$ Correct Answer $$ \frac{-5}{36}$$ or -0.138889

9.	Simplify 1 Simplify the following expression: $$ {\left(6 - 6\right)}^{2} - \left(-3\times3 + -4 - 6\right) $$ Correct Answer $$ 19$$ or 19.0000

10.	Simplify 2 Simplify the following expression: $$ \frac{{\left(2 - -2\right)}^{2}}{-2(-6) - \left(6 + 3\right)} $$ Correct Answer $$ \frac{16}{3}$$ or 5.33333