Topic 1 review

$$0.9^7$$

$$0.9^3$$

$$0.9^{30}$$

$$0.9^{13}$$

$$-37\frac{1}{15}$$

$$-4\ \frac{11}{16}$$

$$-37\ \frac{1}{2}$$

$$37\ \frac{1}{2}$$

$$-\ \frac{1}{4}\times\ \frac{4}{5}=-\ \frac{1}{5}$$

$$-\ \frac{1}{4}\times\ \frac{5}{4}=-\ \frac{5}{16}$$

$$-\ \frac{1}{4}\times\ \left(-\frac{5}{4}\right)=\frac{5}{16}$$

$$-\ \frac{4}{1}\times\ \left(-\frac{4}{5}\right)=\frac{16}{5}$$

$$0.1875$$

$$-1.3125$$

80.1875

-0.75

$$7^1$$

$$7^{20}$$

$$7^9$$

$$\left(7^5\right)^4$$

$$0.\overline{6}$$

$$0.\overline{5}$$

$$0.56$$

0.555

$$Q>0.5$$

$$Q\ >0$$

$$Q\ <0$$

$$Q\ <\ -\frac{3}{4}$$