1. Solve the following equations for x:

1. $2x + 5 = 10 $
2. $-3x - 10 = 20$
3. $3x + 5 = -2x + 15$
4. $5x - 7 = 11x - 19 $

2. Draw pictures that represent the following problems (and solve them):

1. $-5 + 7 = $
2. $6 - 11 = $
3. $2\cdot 9 = $
4. $5.3 \cdot 2.7 = $
5. $\frac{2}{3} + \frac{4}{5} = $

1. Round 84,619 to the nearest hundreds place:
2. Evaluate $20 - 3(6-4)^2 + 5$
3. Calculate: Be sure the final answer is in lowest terms.

$ \frac{3}{5} + \frac{1}{2} $

4. Fill in the chart below: Simplify all fractions.
   1. Convert $\frac{3}{8}$ into a decimal
   2. Convert $0.04$ into a ...