This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Mathematics > Exponents And Powers > Class 8 Maths Chapter 12 Exponents And Powers – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 12 Exponents And Powers Quiz 7 (36 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the value of a digit depending on its place or position in a number called? A) Position Value. B) Number Value. C) Place Value. D) Digit Value. Show Answer Correct Answer: C) Place Value. 2. How would you express the exponent expression below in expanded form? $6^4$ A) (6) (4). B) (6) (6) (6) (6). C) (6) + (6) + (6) + (6). D) None of the above. Show Answer Correct Answer: B) (6) (6) (6) (6). 3. Terms whose variables (and their exponents such as the 2 in x$^{2}$) are the same. A) Like terms. B) Expression. C) Evaluate. D) Variable. Show Answer Correct Answer: A) Like terms. 4. $\left(-\frac{4}{7}\right)^6$ A) 6. B) $\frac{4}{6}$. C) $\frac{-4}{6}$. D) None of the above. Show Answer Correct Answer: C) $\frac{-4}{6}$. 5. $\left(2d^2e^3\right)^5$ A) $10d^{10}e^{15}$. B) $32d^2e^3$. C) $2d^{10}e^{15}$. D) $32d^{10}e^{15}$. Show Answer Correct Answer: D) $32d^{10}e^{15}$. 6. When multiplying powers with the same base ..... A) Multiply the bases and subtract the exponents. B) Keep the base, add the exponents. C) Raise your hand and ask the teacher to solve it for you. D) Give up and run away. Show Answer Correct Answer: B) Keep the base, add the exponents. 7. Which expression is equivalent to-4 x 4 x 4 x 4 x 4 x 4 x 4 x 4? A) -8$^{4}$. B) -4$^{8}$. C) (-8)$^{4}$. D) (-4)$^{8}$. Show Answer Correct Answer: B) -4$^{8}$. 8. What does the exponent tell you in a number written with exponents? A) The value of the base number. B) The number of zeros in the number. C) The total sum of the digits. D) How many times the base number is used as a factor. Show Answer Correct Answer: D) How many times the base number is used as a factor. 9. Ms. Wheeler owes Aja'h $ 1000. What should this number look like in exponent form? A) 10$^{6}$. B) 10$^{18}$. C) 10$^{3}$. D) 10$^{1}$. Show Answer Correct Answer: C) 10$^{3}$. 10. Which expression is equivalent to 6$^{3}$? A) 6 x 6 x 6. B) 6 x 6 x 6 x 6. C) 6 x 3. D) 3 x 3 x 3 x 3 x 3 x 3. Show Answer Correct Answer: A) 6 x 6 x 6. 11. (7uv$^{2}$)$^{-5}$ A) -35uv$^{-10}$. B) 1/7$^{5}$u$^{5}$v$^{10}$. C) 1/7uv$^{10}$. D) -5/7uv$^{2}$. Show Answer Correct Answer: B) 1/7$^{5}$u$^{5}$v$^{10}$. 12. What is the first step in PEMDAS? A) People. B) Parentheses. C) Pages. D) Paragraph. Show Answer Correct Answer: B) Parentheses. 13. Simplify:10$^{19}$ x 10$^{10}$ A) 10$^{9}$. B) 10. C) 10$^{190}$. D) 10$^{29}$. Show Answer Correct Answer: D) 10$^{29}$. 14. Simplify and write in exponential form:$20^{100}\div20^9$ A) $20^{91}$. B) $20^{99}$. C) $20^{109}$. D) $20^{81}$. Show Answer Correct Answer: A) $20^{91}$. 15. Simplify this expression so that it contains only positive exponents. $\frac{3^{-1}\cdot y^{-3}}{x^{-3}}$ A) $\frac{x^3}{3y^3}$. B) $\frac{1}{3x^3y^3}$. C) $3x^3y^3$. D) $\frac{y^3}{3x^3}$. Show Answer Correct Answer: A) $\frac{x^3}{3y^3}$. 16. Use a calculator to evaluate the power. $20^4$ A) 160000. B) 80. C) 3200000. D) 5. Show Answer Correct Answer: A) 160000. 17. Simplify the expression (5$^{3}$x$^{2}$y$^{4}$)$^{0}$ A) 5. B) 5xy. C) 0. D) 1. Show Answer Correct Answer: D) 1. 18. What is the value of the expression below? $\left(-2\right)^4$ A) 2. B) 16. C) -8. D) -16. Show Answer Correct Answer: B) 16. 19. Simplify the following expression:(xyz)$^{0}$ = A) Xyz. B) 0. C) -1. D) 1. Show Answer Correct Answer: D) 1. 20. 2 .sum of parallel sides of a trapezium is 26m and its area is 156 square metres, then distance between the parallel side of the trapezium is A) 12 m. B) 11 m. C) 13 m. D) 14 m. Show Answer Correct Answer: A) 12 m. 21. 1) 1 MICRON IS EQUALE TO 1/1000000 m. A) 1 * 10$^{-6}$. B) 1 * 10$^{4}$. C) 1 * 10$^{-8}$. D) NONE OF THESE. Show Answer Correct Answer: A) 1 * 10$^{-6}$. 22. What is another way to write 10$^{3}$ A) 10. B) 1, 000. C) 100. D) 30. Show Answer Correct Answer: B) 1, 000. 23. (7 x 10$^{3}$ ) + (3 x 10$^{2}$) + ( 9 x 10$^{1}$) + (2 x 10$^{0}$) A) 70, 392. B) 73, 920. C) 7, 392. D) 73, 092. Show Answer Correct Answer: C) 7, 392. 24. Algebraic Rule for the Product of Powers (explain your rule using symbols):$x^a\cdot x^b$ A) $x^{a/b}$. B) $x^{ab}$. C) $x^{a+b}$. D) $x^{a-b}$. Show Answer Correct Answer: C) $x^{a+b}$. 25. 7$^{2}$x 7$^{7}$x7$^{0}$x7$^{5}$x 7 is equal to ..... A) 7$^{0}$. B) 1. C) 7$^{16}$. D) 7$^{15}$. Show Answer Correct Answer: D) 7$^{15}$. 26. (6x$^{2}$)(-3x$^{5}$) A) 18x$^{7}$. B) 18x$^{10}$. C) 3$^{}$x$^{7}$. D) -18x$^{7}$. Show Answer Correct Answer: D) -18x$^{7}$. 27. The exponential form of 32 is A) 2 raised to the power 3. B) 2 raised to the power 4. C) 2 raised to the power 5. D) None of the above. Show Answer Correct Answer: C) 2 raised to the power 5. 28. $(256a^{16}\div81b^4)^{-\frac{3}{4}}$ A) $\frac{27}{64}a^{12}b^3$. B) $\frac{64}{27}a^{-12}b^3$. C) $\frac{27}{64}a^{12}b^{-3}$. D) $\frac{27}{64}a^{-12}b^3$. Show Answer Correct Answer: D) $\frac{27}{64}a^{-12}b^3$. 29. What is 2$^{3}$ x 2$^{2}$? A) 2$^{4}$ = 16. B) 2$^{6}$ = 64. C) 2$^{5}$ = 32. D) 2$^{3}$ = 8. Show Answer Correct Answer: C) 2$^{5}$ = 32. 30. $10\times10\times10\times10$ A) $40$. B) $10^4$. C) $4^{10}$. D) $14$. Show Answer Correct Answer: B) $10^4$. 31. What is the term for the result of an exponentiation? A) The root. B) The power. C) The base. D) The exponent. Show Answer Correct Answer: B) The power. 32. Simplify and write the answer in exponential form:$\left(8^{50}\right)^3$ A) $8^{150}$. B) $8^{53}$. C) $8^{47}$. D) $8^{15}$. Show Answer Correct Answer: A) $8^{150}$. 33. The area of a rhombus is 240 cm2 and one of the diagonals is 16 cm. Find the other diagonal. A) 30 cm. B) 36 cm. C) 20 cm. D) 16 cm. Show Answer Correct Answer: A) 30 cm. 34. How is 65950 expressed in standard form? A) $65.95\times10^4$. B) $65.95\times10^3$. C) $6.595\times10^{-4}$. D) $6.595\times10^4$. Show Answer Correct Answer: D) $6.595\times10^4$. 35. 19$^{5}$/17$^{5}$ will give the value is ..... A) (19/17)$^{0}$. B) (17/19)$^{5}$. C) (19/17)$^{5}$. D) (19/17)$^{10}$. Show Answer Correct Answer: C) (19/17)$^{5}$. 36. Sanjeev has 10$^{3 }$rings. If Sanjeev gives 10$^{2 }$rings away to jiya, how many rings does sanjeev have left? A) 1900. B) 900. C) 920. D) 9. Show Answer Correct Answer: B) 900. ← PreviousRelated QuizzesMathematics QuizzesClass 8 QuizzesClass 8 Maths Chapter 12 Exponents And Powers Quiz 1Class 8 Maths Chapter 12 Exponents And Powers Quiz 2Class 8 Maths Chapter 12 Exponents And Powers Quiz 3Class 8 Maths Chapter 12 Exponents And Powers Quiz 4Class 8 Maths Chapter 12 Exponents And Powers Quiz 5Class 8 Maths Chapter 12 Exponents And Powers Quiz 6 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books