1.	Simplify 1 Simplify the following expression: $$ \left(2\times4 + 4(-3)\right)2\left(6 - 3\right) $$ Correct Answer $$ -24$$ or -24.0000

2.	Simplify 2 Simplify the following expression: $$ 2\times6\times3\left(\frac{5}{6} + \frac{-3}{1}\right) $$ Correct Answer $$ -78$$ or -78.0000

3.	Fractions 1 Simplify the following expression: $$ \frac{4}{2} + \frac{-5}{3} $$ Correct Answer $$ \frac{1}{3}$$ or 0.33333333333333326

4.	Fractions 2 Simplify the following expression: $$ \frac{\frac{-4}{5}}{\frac{1}{4}} $$ Correct Answer $$ \frac{-16}{5}$$ or -3.2

5.	Significant figures 1. Write the following to 2 significant figures: 0.0011331498 Correct Answer 0.0011 or $$1.1\times10^{-3}$$ 2. Write the following to 5 significant figures: 0.062659782 Correct Answer 0.062660 or $$6.2660\times10^{-2}$$

6.	Standard Form 1. Write the following in standard form to 3 significant digits: 0.0000192012 Correct Answer $$1.92\times10^{-5}$$ 2. Write the following in standard form to 2 significant digits: 0.640926 Correct Answer $$6.4\times10^{-1}$$

7.	Significant figures 1. Write the following in preferred standard form to 3 significant digits: 778.8 Correct Answer $$779\times10^{0}$$ 2. Write the following in preferred standard form to 5 significant digits: 0.03262805 Correct Answer $$32.628\times10^{-3}$$

8.	Simplify 2 Simplify the following expression: $$ {\left(-2 - 5\right)}^{2} + \left(4 - 3\right)\left(-5 - 5\right) $$ Correct Answer $$ 39$$ or 39.0000

9.	Simplify 1 Simplify the following expression: $$ 2\times1(-5)\left(5\times5 - 3(-4)\right) $$ Correct Answer $$ -370$$ or -370.000

10.	Simplify 2 Simplify the following expression: $$ 2(-4)6 - \frac{-2 + 5}{5 - 3} $$ Correct Answer $$ \frac{-99}{2}$$ or -49.5000