Review Exercises

ⓐ $\text{−}\left|7\right|\_\_\_-\left|\mathrm{-7}\right|$
ⓑ $\mathrm{-8}\_\_\_-\left|\mathrm{-8}\right|$
ⓒ $\left|\mathrm{-13}\right|\_\_\_-13$
ⓓ $\left|\mathrm{-12}\right|\_\_\_-\left(\mathrm{-12}\right)$

$12-3\left|1-4\left(4-2\right)\right|$

ⓐ $15-7$
ⓑ $\mathrm{-15}-(\mathrm{-7})$
ⓒ $\mathrm{-15}-7$
ⓓ $15-\left(\mathrm{-7}\right)$

ⓐ $23-\left(\mathrm{-17}\right)$ ⓑ $23+17$

ⓐ $\mathrm{-27}÷9$ ⓑ $120÷\left(\mathrm{-8}\right)$ ⓒ $4\left(\mathrm{-14}\right)$ ⓓ $\mathrm{-1}\left(\mathrm{-17}\right)$

$\left(7-11\right)\left(6-13\right)$

$6-3\left|4\left(1-2\right)-\left(7-5\right)\right|$

${\left(y+z\right)}^2$ when
$y=\mathrm{-4},z=7$

the sum of $\mathrm{-4}$ and $\mathrm{-9},$ increased by 23

Temperature On July 10, the high temperature in Phoenix, Arizona, was 109°, and the high temperature in Juneau, Alaska, was 63°. What was the difference between the temperature in Phoenix and the temperature in Juneau?

$-\frac{270x^3}{198y^2}$

$\frac{6x}{25}÷\frac{9y}{20}$

$\frac{5}{18}+\frac{7}{12}$

ⓐ $\frac{5}{8}+\frac{3}{4}$ ⓑ $\frac{5}{8}÷\frac{3}{4}$

$\frac{4·3-2·5}{\mathrm{-6}·3+2·3}$

$\frac{4^3-4^2}{{\left(\frac{4}{5}\right)}^2}$

$\frac{a+b}{a-b}$ when
$a=\mathrm{-4},$ $b=6$

$\mathrm{-23.67}+29.84$

$79.38-\left(\mathrm{-17.598}\right)$

$\left(\mathrm{-8.43}\right)\left(\mathrm{-57.91}\right)$

$\left(0.563\right)\left(100\right)$

$1.84÷\left(\mathrm{-0.8}\right)$

$\mathrm{-9.6}$

$\frac{14}{11}$

$0.0475$

$\sqrt{\mathrm{-121}}$

$\frac{3}{4},-\frac{3}{4},1\frac{1}{3},\mathrm{-1}\frac{2}{3},\frac{7}{2},-\frac{5}{2}$

$\frac{5}{8}x+\frac{5}{12}y+\frac{1}{8}x+\frac{7}{12}y$

$\left(\frac{11}{15}+\frac{3}{8}\right)+\frac{5}{8}$

$\frac{13}{15}·\frac{9}{17}·\frac{15}{13}$

$\frac{5x-7}{0},5x-7\ne 0$

$12\left(\frac{2}{3}b+\frac{5}{6}\right)$

$\left(x-5\right)p$

$12-6\left(x+3\right)$

$5\left(2y+3\right)-\left(4y-1\right)$