1.	Simplify 1 Simplify the following expression: $$ 6 + 5 - {1}^{2} + {\left(-2 + 2\right)}^{2} $$ Correct Answer $$ 10$$ or 10.0000

2.	Simplify 2 Simplify the following expression: $$ \frac{2(-5)1}{2(-5) + 1 - 5} $$ Correct Answer $$ \frac{5}{7}$$ or 0.714286

3.	Fractions 1 Simplify the following expression: $$ \frac{5}{2} + \frac{-4}{5} $$ Correct Answer $$ \frac{17}{10}$$ or 1.7

4.	Fractions 2 Simplify the following expression: $$ \frac{\frac{5}{3}}{\frac{-3}{6}} $$ Correct Answer $$ \frac{-10}{3}$$ or -3.3333333333333335

5.	Significant figures 1. Write the following to 2 significant figures: 0.000084637896 Correct Answer 0.000085 or $$8.5\times10^{-5}$$ 2. Write the following to 4 significant figures: 115.30827 Correct Answer 115.3 or $$1.153\times10^{2}$$

6.	Standard Form 1. Write the following in standard form to 5 significant digits: 107.436 Correct Answer $$1.0744\times10^{2}$$ 2. Write the following in standard form to 2 significant digits: 0.000369219 Correct Answer $$3.7\times10^{-4}$$

7.	Significant figures 1. Write the following in preferred standard form to 2 significant digits: 0.01122 Correct Answer $$11\times10^{-3}$$ 2. Write the following in preferred standard form to 5 significant digits: 0.000000535512 Correct Answer $$535.51\times10^{-9}$$

8.	Simplify 2 Simplify the following expression: $$ 2\times1(-1)\left((-1) + \frac{-2}{2}\right) $$ Correct Answer $$ 4$$ or 4.00000

9.	Simplify 1 Simplify the following expression: $$ \left(-3\times5 - 3(-4)\right)2\left(-5 - 6\right) $$ Correct Answer $$ 66$$ or 66.0000

10.	Simplify 2 Simplify the following expression: $$ \frac{2{(-5)}^{4}}{{\left(4 - 1\right)}^{\frac{-2}{-5}}} $$ Correct Answer $$ \frac{1250}{{3}^{\frac{2}{5}}}$$ or 805.493