1.	Simplify 1 Simplify the following expression: $$ 6\times3 + 4 - -1 - 2\times5\times6 $$ Correct Answer $$ -37$$ or -37.0000

2.	Simplify 2 Simplify the following expression: $$ \frac{\frac{3}{5} + \frac{5}{1}}{{\left(-3 - 5\right)}^{2}} $$ Correct Answer $$ \frac{7}{80}$$ or 0.0875000

3.	Fractions 1 Simplify the following expression: $$ \frac{4}{4} + \frac{-6}{5} $$ Correct Answer $$ \frac{-1}{5}$$ or -0.19999999999999996

4.	Fractions 2 Simplify the following expression: $$ \frac{-6}{4}\frac{2}{3} $$ Correct Answer $$ -1$$ or -1.0

5.	Significant figures 1. Write the following to 4 significant figures: 0.43197876 Correct Answer 0.4320 or $$4.320\times10^{-1}$$ 2. Write the following to 3 significant figures: 0.00022855126 Correct Answer 0.000229 or $$2.29\times10^{-4}$$

6.	Standard Form 1. Write the following in standard form to 4 significant digits: 0.00000324894 Correct Answer $$3.249\times10^{-6}$$ 2. Write the following in standard form to 4 significant digits: 1471.88 Correct Answer $$1.472\times10^{3}$$

7.	Significant figures 1. Write the following in preferred standard form to 3 significant digits: 22050 Correct Answer $$22.1\times10^{3}$$ 2. Write the following in preferred standard form to 5 significant digits: 30.48375 Correct Answer $$30.484\times10^{0}$$

8.	Simplify 2 Simplify the following expression: $$ \frac{\left(5 - -4\right)\left(5 + 3\right)}{2\times5(-3)} $$ Correct Answer $$ \frac{-12}{5}$$ or -2.40000

9.	Simplify 1 Simplify the following expression: $$ \left(-4 + 2 + 2 - -1\right)2\left(-6 - -2\right) $$ Correct Answer $$ -8$$ or -8.00000

10.	Simplify 2 Simplify the following expression: $$ {\left(6 - -6\right)}^{\left(-5 - 4\right)}2\frac{6}{2} $$ Correct Answer $$ \frac{6}{{12}^{9}}$$ or 0.00000000116284