Quiz about เลขยกกำลัง ม.5 (2)

Question 1

$$8^{-3} imes4^{10}=?$$

Accepted Answer

$$2^{11}$$

Answer

$$2^9$$

Answer

$$2^7$$

Answer

$$2^5$$

Question 2

$$\frac{\left(-3\right)^9\left(-3\right)^7}{\left(-3\right)^{10}}\ \ =\ \ ?$$

Accepted Answer

$$3^6$$

Answer

$$-3^6$$

Answer

$$\left(-\frac{1}{3}\right)^6$$

Answer

$$\left(\frac{1}{3}\right)^6$$

Question 3

$$\left(\frac{8}{15} ight)^5 imes10^6=?$$

Accepted Answer

$$\frac{2^{21} imes5}{3^5}$$

Answer

$$\frac{2^{12} imes3^7}{5^3}$$

Answer

$$\frac{2^{12} imes3^6}{5^5}$$

Answer

$$\frac{2^{18} imes5^2}{3^3}$$

Question 4

$$\frac{36 imes10^{-7}}{9 imes10^{-9}}=?$$

Accepted Answer

$$2^4 imes5^2$$

Answer

$$2^2 imes5^2$$

Answer

$$3^2 imes5^4$$

Answer

$$3^3 imes5^4$$

Question 5

$$\frac{27^7 imes81^{-4}}{3^5 imes9^{-2}}=?$$

Accepted Answer

1

Answer

3

Answer

$$3^2$$

Answer

$$3^3$$

Question 6

$$2^3 imes2^0 imes2^{-4}=?$$

Accepted Answer

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

Answer

$$2^2$$

Answer

$$2^7$$

Answer

$$\frac{1}{2^2}$$

Question 7

$$5^{-2}=?$$

Accepted Answer

$$\frac{1}{5^2}$$

Answer

25

Answer

$$\frac{1}{2^5}$$

Answer

$$5^2$$

Question 8

$$49^2 imes27^2 imes21^{-4}=?$$

Accepted Answer

$$3^2$$

Answer

$$3^2 imes7^4$$

Answer

$$3^3 imes7^2$$

Answer

$$7^2$$

Question 9

$$32^4 imes128^{-3}=?$$

Accepted Answer

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

Answer

$$\frac{1}{2^2}$$

Answer

$$2$$

Answer

$$2^2$$

Question 10

$$\frac{16^5 imes256^{-3}}{128^{-5}}=?$$

Accepted Answer

$$2^{31}$$

Answer

$$2^{26}$$

Answer

$$2^{35}$$

Answer

$$2^{38}$$

เลขยกกำลัง ม.5 (2)

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