1.	Simplify 1 Simplify the following expression: $$ \left(5(-5) + 3\times1\right)2(-5)(-2) $$ Correct Answer $$ -440$$ or -440.000

2.	Simplify 2 Simplify the following expression: $$ \frac{{\left(-2 + 5\right)}^{2}}{\frac{6}{3} + \frac{1}{-5}} $$ Correct Answer $$ 5$$ or 5.00000

3.	Fractions 1 Simplify the following expression: $$ \frac{-4}{5} + \frac{1}{2} $$ Correct Answer $$ \frac{-3}{10}$$ or -0.30000000000000004

4.	Fractions 2 Simplify the following expression: $$ \frac{\frac{1}{6}}{\frac{-3}{4}} $$ Correct Answer $$ \frac{-2}{9}$$ or -0.2222222222222222

5.	Significant figures 1. Write the following to 5 significant figures: 9727.2369 Correct Answer 9727.2 or $$9.7272\times10^{3}$$ 2. Write the following to 4 significant figures: 209.19818 Correct Answer 209.2 or $$2.092\times10^{2}$$

6.	Standard Form 1. Write the following in standard form to 4 significant digits: 428.081 Correct Answer $$4.281\times10^{2}$$ 2. Write the following in standard form to 4 significant digits: 0.0683346 Correct Answer $$6.833\times10^{-2}$$

7.	Significant figures 1. Write the following in preferred standard form to 4 significant digits: 0.00374735 Correct Answer $$3.747\times10^{-3}$$ 2. Write the following in preferred standard form to 3 significant digits: 0.00000018021 Correct Answer $$180\times10^{-9}$$

8.	Simplify 2 Simplify the following expression: $$ 2\left(-3 - -2\right)\frac{{3}^{1}}{{(-2)}^{3}} $$ Correct Answer $$ \frac{3}{4}$$ or 0.750000

9.	Simplify 1 Simplify the following expression: $$ \left(-3 + 5\right)\left(-1 - 6\right) - {\left(-1 + 3\right)}^{2} $$ Correct Answer $$ -18$$ or -18.0000

10.	Simplify 2 Simplify the following expression: $$ \left(3 + -2\right)\left(1 - -1\right) - 2\left(2 - -1\right) $$ Correct Answer $$ -4$$ or -4.00000