1.	Simplify 1 Simplify the following expression: $$ 2\times2(-4) - \left(-3(-6) + 5 - 2\right) $$ Correct Answer $$ -37$$ or -37.0000

2.	Simplify 2 Simplify the following expression: $$ 2(-4)(-4)\left({2}^{6} + 3 - 2\right) $$ Correct Answer $$ 2080$$ or 2080.00

3.	Fractions 1 Simplify the following expression: $$ \frac{6}{4} + \frac{2}{3} $$ Correct Answer $$ \frac{13}{6}$$ or 2.1666666666666665

4.	Fractions 2 Simplify the following expression: $$ \frac{-2}{3}\frac{-1}{5} $$ Correct Answer $$ \frac{2}{15}$$ or 0.13333333333333333

5.	Significant figures 1. Write the following to 5 significant figures: 0.00015330561 Correct Answer 0.00015331 or $$1.5331\times10^{-4}$$ 2. Write the following to 3 significant figures: 3513.9051 Correct Answer 3510 or $$3.51\times10^{3}$$

6.	Standard Form 1. Write the following in standard form to 5 significant digits: 2049.26 Correct Answer $$2.0493\times10^{3}$$ 2. Write the following in standard form to 2 significant digits: 0.000482087 Correct Answer $$4.8\times10^{-4}$$

7.	Significant figures 1. Write the following in preferred standard form to 2 significant digits: 0.00181 Correct Answer $$1.8\times10^{-3}$$ 2. Write the following in preferred standard form to 3 significant digits: 0.00050574 Correct Answer $$506\times10^{-6}$$

8.	Simplify 2 Simplify the following expression: $$ \frac{2(-5)(-2)}{{\left(3 - -5\right)}^{\frac{3}{5}}} $$ Correct Answer $$ \frac{20}{{8}^{\frac{3}{5}}}$$ or 5.74349

9.	Simplify 1 Simplify the following expression: $$ \left(-3\times5 - \left(-1 + 3\right)\right)2(-2)5 $$ Correct Answer $$ 340$$ or 340.000

10.	Simplify 2 Simplify the following expression: $$ 2\times2(-6)\left(-6 - 3 + 2 + 4\right) $$ Correct Answer $$ 72$$ or 72.0000