This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Mathematics Chapter 11 Exponents And Powers – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A scientist estimates that, after a certain amount of time, there would be 2$^{5}$. 3$^{3}$.10$^{5}$ bacteria in a Petri dish. How many bacteria is this? Write your answer in standard form. A) 10. B) 27, 000. C) 100, 000. D) 86, 400, 000. Show Answer Correct Answer: D) 86, 400, 000. 2. 18$^{1 }$= A) 18. B) 0. C) 324. D) 1. Show Answer Correct Answer: A) 18. 3. Simplify:(5ab$^{2}$)$^{2}$ A) 25a$^{2}$b$^{4}$. B) 10a$^{2}$b$^{4}$. C) 10ab$^{4}$. D) $^{4} $. Show Answer Correct Answer: A) 25a$^{2}$b$^{4}$. 4. What is the Exponent? $6.8^2$ A) 6.8. B) 2. C) All the above. D) None of the above. Show Answer Correct Answer: B) 2. 5. Calculate $-7^3$ A) 21. B) -21. C) 343. D) -343. Show Answer Correct Answer: D) -343. 6. What is $2^3$ A) 6. B) 10. C) 8. D) None of the above. Show Answer Correct Answer: C) 8. 7. 5 $^{2}$/$_{3 }$+ 4 $^{3}$/$_{5 }$ A) 10 $^{4}$/$_{15 }$hours. B) 10 hours. C) 9 $^{19}$/$_{30 }$hours. D) 9 $^{4/}$$_{15 }$hours. Show Answer Correct Answer: A) 10 $^{4}$/$_{15 }$hours. 8. Simplify $x^2\times x^4$ A) $x^2$. B) $x^4$. C) $x^6$. D) $x^8$. Show Answer Correct Answer: C) $x^6$. 9. How would you write 2x2x2x2x2 in exponential form? A) 2x5. B) 2$^{5}$. C) 32. D) None of the above. Show Answer Correct Answer: B) 2$^{5}$. 10. Write the product in exponential form:4 x 4 x 4 x 4 A) $4^4$. B) $4^5$. C) All the above. D) None of the above. Show Answer Correct Answer: A) $4^4$. 11. $7^2-3^2=$ A) 7-3=4. B) 14-6=8. C) 49-9=40. D) None of the above. Show Answer Correct Answer: C) 49-9=40. 12. Write the product using exponents:$3^{ }\cdot3^{ }\cdot3\cdot3$ A) $3^4$. B) 81. C) $3^3$. D) 27. Show Answer Correct Answer: A) $3^4$. 13. About 13 out of 20 homes have a personal computer. On a street with 60 homes, how many would you expect to have a personal computer? A) 7 homes. B) 39 homes. C) 73 homes. D) 40 homes. Show Answer Correct Answer: B) 39 homes. 14. Which expression is equivalent to(5$^{3}$)$^{4}$? A) 5$^{7}$. B) 1/5. C) 5$^{12}$. D) 20$^{3}$. Show Answer Correct Answer: C) 5$^{12}$. 15. According to the Product of Powers property, when we multiply exponential expressions we ..... the exponents. A) Add. B) Subtract. C) Multiply. D) Divide. Show Answer Correct Answer: A) Add. 16. What is the side length of a square that has an area of 36? A) 9. B) 18. C) 6. D) 1296. Show Answer Correct Answer: C) 6. 17. Evaluate 10$^{-2}$ A) 100. B) 0.01. C) 0.001. D) 20. Show Answer Correct Answer: B) 0.01. 18. Which of the following is equivalent to $\left(-2\right)^{-3}$ A) $6$. B) $-\frac{1}{8}$. C) $8$. D) $-\frac{2}{3}$. Show Answer Correct Answer: B) $-\frac{1}{8}$. 19. Write the expression m$^{-7}$ using a positive exponent. A) -1/m$^{7}$. B) -m$^{7}$. C) M$^{7}$. D) 1/m$^{7}$. Show Answer Correct Answer: D) 1/m$^{7}$. 20. $100^0+20^0+5^0$ A) 125. B) 25. C) 1/125. D) 3. Show Answer Correct Answer: D) 3. 21. What is 6$^{2}$? A) 8. B) 36. C) 4. D) 12. Show Answer Correct Answer: B) 36. 22. Write using exponents. (1/6)(1/6)(1/6)(1/6) A) 1/6$^{4}$. B) (1/6)$^{4}$. C) 1/1296. D) None of the above. Show Answer Correct Answer: B) (1/6)$^{4}$. 23. Simplify the expression (4$^{5}$)$^{2}$ A) 4$^{3}$. B) 4$^{7}$. C) 4$^{10}$. D) The correct answer is not here. Show Answer Correct Answer: C) 4$^{10}$. 24. 10 x 10 x 10 x 10 can be written as 10 to what power? A) 10. B) 10$^{2}$. C) 10$^{3}$. D) 10$^{4}$. Show Answer Correct Answer: D) 10$^{4}$. 25. Simplify(2a$^{2}$b$^{4}$z)(6a$^{3}$b$^{2}$z$^{5}$) A) 8a$^{5}$b$^{6}$z$^{6}$. B) 12a$^{6}$b$^{8}$z$^{5}$. C) 12a$^{5}$b$^{6}$z$^{6}$. D) 8a$^{6}$b$^{8}$z$^{5}$. Show Answer Correct Answer: C) 12a$^{5}$b$^{6}$z$^{6}$. ← PreviousNext →Related QuizzesClass 7 Mathematics Chapter 11 Exponents And Powers Quiz 1Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 2Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 3Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 4Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 5Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 6Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 7Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 8Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 9Class 7 Mathematics Chapter 11 Exponents And Powers Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books