Free Printable เลขยกกำลังม.2

1.

Write (–2)⁵( –2)³( –2) in exponential form.

a)

$\left(-2\right)^8$

b)

$\left(-2\right)^9$

c)

$\left(-2\right)^{15}$

d)

$2^8$

2.

$Write\ in\ \exp onential\ form:\ \left(-\frac{2}{3}\right)\left(-\frac{2}{3}\right)\left(-\frac{2}{3}\right)\left(-\frac{2}{3}\right)\left(-\frac{2}{3}\right)$

a)

$\left(-\frac{2}{3}\right)^8$

b)

$\left(-\frac{2}{3}\right)^7$

c)

$\left(-\frac{2}{3}\right)^6$

d)

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

3.

What is the exponential form of (2ab²)(5ab³)(2ab²)(2ab²)(5ab³)(5ab³)?

a)

$\left(2ab^2\right)^2\ \left(5ab^3\right)^2$

b)

$10a^2b^5$

c)

$\left(2ab^2\right)^3\left(5ab^3\right)^3$

d)

$10a^3b^5$

4.

Expand (–0.5)⁵.

a)

$\left(-0.5\right)\left(-0.5\right)\left(-0.5\right)\left(-0.5\right)\left(-0.5\right)$

b)

$\left(-0.5\right)\left(0.5\right)\left(-0.5\right)\left(0.5\right)\left(-0.5\right)$

c)

$\left(0.5\right)\left(0.5\right)\left(0.5\right)\left(0.5\right)\left(0.5\right)$

d)

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

5.

Write $\left(\frac{2}{5}\right)^4$ as repeated multiplication.

a)

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

b)

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

c)

$\left(\frac{2}{3}\right)\left(\frac{2}{3}\right)\left(\frac{2}{3}\right)\left(\frac{2}{3}\right)$

d)

$\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)$

6.

What is the exponential form of 216?

a)

$2^3\times3^2$

b)

$2^3\times3^3$

c)

$2^2\times3^3$

d)

$2^3\times3^4$

7.

Express 243 in exponential form.

a)

$5^5$

b)

$4^5$

c)

$3^5$

d)

$2^5$

8.

Identify the base(s) of $2a^4b^2c^3$ .

a)

2,a, b, c

b)

a, b, c

c)

1, 4, 2, 3

d)

4, 2, 3

9.

Identify the powers of $m^5n^2pq^3$ .

a)

m, n, p, q

b)

5, 2, 3

c)

5, 2, 1, 3

d)

10

10.

Write the exponential form of (-3)(-3)(3)(3)(-3)(3)(-3)(3)(3).

a)

$\left(-3\right)^8$

b)

$3^8$

c)

$\left(-3\right)^9$

d)

$3^9$

11.

$2^5$ มีความหมายตรงกับข้อใด

a)

$2\times5$

b)

$5\times5$

c)

$2\times2\times2\times2\times2$

d)

$2+2+2+2+2$

12.

$5^2\times5^6$ เท่ากับข้อใด

a)

$5^{12}$

b)

$5^8$

c)

$5^4$

d)

$5^3$

13.

$\frac{2^7}{2^3}\$ เท่ากับข้อใด

a)

$2^{10}$

b)

$2^7$

c)

$2^4$

d)

$2^3$

14.

$3^{-5}$ เท่ากับข้อใด

a)

undefined

b)

$0$

c)

$\frac{3}{5}$

d)

-2

15.

$123^0$ มีค่าเท่าใด

a)

0

b)

1

c)

123

d)

หาค่าไม่ได้

16.

$\left(-7\right)\times\left(-7\right)\times\left(-7\right)\times\left(-7\right)\times\left(-7\right)$ เท่ากับข้อใด

a)

$\left(-7\right)^{11}$

b)

$-7^{11}$

c)

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

d)

$-7^5$

17.

121 มีค่าเท่ากับข้อใด

a)

$11^2$

b)

$13^2$

c)

$17^2$

d)

$19^2$

18.

จงหาผลลัพธ์ของ $\frac{3^4\times3^5}{3^7}$

a)

$3^2$

b)

$3^9$

c)

$3^7$

d)

$3^5$

19.

$x\cdot x^2\cdot x^4$ เท่ากับข้อใด

a)

$x^6$

b)

$x^8$

c)

$x^7$

d)

$x^6$

20.

216 มีค่าตรงกับข้อใด

a)

$16^2$

b)

$6^3$

c)

$14^2$

d)

$4^4$

21.

จงหาผลลัพธ์ของ $x^3y^{4\ }\times\ x^5y^6$

a)

$x^8y^{10}$

b)

$x^7y^{11}$

c)

$xy^{18}$

d)

$x^2y^2$

22.

$\left(xy\right)^3$ เท่ากับข้อใด

a)

$3xy$

b)

$3x\cdot3y$

c)

$xy^3$

d)

$x^3y^3$

23.

$\left(2ab\right)^5$ เท่ากับข้อใด

a)

$2^5a^5b^5$

b)

$10a^5b^5$

c)

$2ab^5$

d)

$2a^5b^5$

24.

ข้อใดต่อไปนี้มีผลลัพธ์เท่ากับ 25

a)

$2\cdot5$

b)

$5\cdot5^2$

c)

$5^0\cdot5^2$

d)

$25^0$

25.

$7^0+0^2$ มีค่าเท่าใด

a)

0

b)

1

c)

2

d)

9

เลขยกกำลังม.2

Total questions: 25

Worksheet time: 12mins

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