This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Maths Chapter 12 Exponents And Powers – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 12 Exponents And Powers Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How would you change this to a positive exponent:1/x$^{-3}$ A) 1/x$^{3}$. B) X$^{3}$. C) 3x. D) 1/3x. Show Answer Correct Answer: B) X$^{3}$. 2. According to exponent rules, when we raise a base to a power we ..... the exponents. A) Add. B) Subtract. C) Multiply. D) Divide. Show Answer Correct Answer: C) Multiply. 3. (9mn)$^{3}$ A) 729mn. B) 729m$^{3}$n$^{3}$. C) 27m$^{3}$n$^{3}$. D) 9mn$^{3}$. Show Answer Correct Answer: B) 729m$^{3}$n$^{3}$. 4. (2m$^{4}$)(5m$^{2}$) A) 10m$^{6}$. B) 10m$^{8}$. C) 7m$^{6}$. D) 7m$^{8}$. Show Answer Correct Answer: A) 10m$^{6}$. 5. (4 x 10$^{2 }$) + (5 x 10$^{1}$ ) + (1 x 10$^{0}$ ) A) 541. B) 4, 051. C) 45, 001. D) 451. Show Answer Correct Answer: D) 451. 6. The power of a power rule says that when an exponential expression is raised to a power (as shown above), you should ..... the inner and outer exponents A) Add. B) Subtract. C) Multiply. D) Divide. Show Answer Correct Answer: C) Multiply. 7. $6^3\div6^2$ A) $6^5$. B) $6^6$. C) $6^1$. D) $6^2$. Show Answer Correct Answer: C) $6^1$. 8. Simplify the expression (4x$^{2}$)$^{2}$ A) 16x$^{4}$. B) 8x$^{2}$. C) 4x$^{4}$. D) 2x$^{2}$. Show Answer Correct Answer: A) 16x$^{4}$. 9. What is 10$^{3 }$? A) 100. B) 30. C) 300. D) 1000. Show Answer Correct Answer: D) 1000. 10. Nxnxnxnxnxn A) N raise to 6. B) N raise to 5. C) N raise to 7. D) N raise to 8. Show Answer Correct Answer: A) N raise to 6. 11. FILL IN THE BLANKS:(a$^{m}$)$^{n}$. WHERE m AND n ARE NATURAL NUMBER. A) A $^{m+n}$. B) A $^{m-n}$. C) A$^{ mn}$. D) NONE OF THESE. Show Answer Correct Answer: C) A$^{ mn}$. 12. If $\sqrt{x}=12$ A) 121. B) 124. C) 144. D) 196. Show Answer Correct Answer: C) 144. 13. True or false:Addition ALWAYS comes before subtraction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 14. 2x2x2x2=64which one is exponent A) 2. B) 64. C) 2x2. D) 64 and 2. Show Answer Correct Answer: B) 64. 15. What is the definition of an exponent? A) An exponent indicates how many times a number (the base) is multiplied by itself. B) An exponent is a number that represents the square root of another number. C) An exponent is a mathematical operation that adds two numbers together. D) An exponent is a symbol used to denote a fraction. Show Answer Correct Answer: A) An exponent indicates how many times a number (the base) is multiplied by itself. 16. Simplify and leave in exponent form 8$^{2}$/8$^{5}$ A) 8$^{3}$. B) 8$^{2-5}$ = 8$^{-3}$ = 1/8$^{3}$. C) 8$^{-3}$. D) 8$^{7}$. Show Answer Correct Answer: B) 8$^{2-5}$ = 8$^{-3}$ = 1/8$^{3}$. 17. 1)The value of 4$^{0}$ is A) 1. B) 4. C) 0. D) None of the above. Show Answer Correct Answer: A) 1. 18. What happens when you move to the left on the place value chart? A) You multiply by 10. B) You divide by 10. C) You add 10. D) You subtract 10. Show Answer Correct Answer: B) You divide by 10. 19. What is the result of 2$^{-3}$? A) 1/8. B) 8. C) 1/4. D) 2. Show Answer Correct Answer: A) 1/8. 20. Simplify:$x\left(x^{-1}\right)$ A) 1. B) X. C) $x^2$. D) $\frac{1}{x}$. Show Answer Correct Answer: A) 1. 21. What is the value of 4$^{2}$ x 4$^{3}$? A) 512. B) 1024. C) 256. D) 2048. Show Answer Correct Answer: B) 1024. 22. VERY SMALL NUMBER CAN BE EXPRESSED IN STANDARD FORM USING ..... A) POSITIVE EXPONENTS. B) WHOLE NUMBER. C) NEGATIVE EXPONENTS. D) NATURAL NUMBER. Show Answer Correct Answer: C) NEGATIVE EXPONENTS. 23. What is the value of $(-3)^2$ A) -9. B) 9. C) -6. D) 6. Show Answer Correct Answer: B) 9. 24. The value of 'm' in the expression 2$^{m-3}$ = 1 is A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: C) 3. 25. 6k$^{2}$ * k A) 6. B) 6k. C) 6k$^{2}$. D) 6k$^{3}$. Show Answer Correct Answer: D) 6k$^{3}$. ← PreviousNext →Related 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 6Class 8 Maths Chapter 12 Exponents And Powers Quiz 7Class 8 Maths Chapter 12 Exponents And Powers Quiz 8Class 8 Maths Chapter 12 Exponents And Powers Quiz 9Class 8 Maths Chapter 12 Exponents And Powers Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books