Chapter 2: Indices & Standard Form - Math Mcqs for Grade 8 - Set 1

1)   The product of a²b4 and a³b5 is

a. a10 b20
b. a5 b9
c. a4 b6
d. a6 b7
 Answer  Explanation ANSWER: a5 b9 Explanation: No explanation is available for this question!

2)   The product of y7 and y³ is equal to

a. y¹⁰
b. y21
c. y4
d.
 Answer  Explanation ANSWER: y¹⁰ Explanation: No explanation is available for this question!

3)   The answer of 9.5 x 10⁵ ⁄10⁴ in ordinary notation is

a. 0.95
b. 0.095
c. 95
d. 0.0095
 Answer  Explanation ANSWER: 95 Explanation: No explanation is available for this question!

4)   If 3⁶ ⁄27 = 3x then the value of 'x' is

a. 3
b. 4
c. 5
d. 2
 Answer  Explanation ANSWER: 3 Explanation: No explanation is available for this question!

5)   If (9⁴ )2 = 3x then the value of 'x' is

a. 14
b. 16
c. 15
d. 17
 Answer  Explanation ANSWER: 16 Explanation: No explanation is available for this question!

6)   The product of b and 5b³ is

a. 5b⁴
b. 6b³
c. 6b⁴
d. 6b²
 Answer  Explanation ANSWER: 5b⁴ Explanation: No explanation is available for this question!

7)   By solving the following (5a²b³)², the answer will be

a. 25a⁵ b⁶
b. 25a⁴ b⁶
c. 25a⁷ b⁵
d. 25a³b⁴
 Answer  Explanation ANSWER: 25a⁴ b⁶ Explanation: No explanation is available for this question!

8)   By solving a x (a²)⁹ , the answer will be

a. a¹⁵
b. a¹⁹
c. a¹⁸
d. a²⁰
 Answer  Explanation ANSWER: a¹⁹ Explanation: No explanation is available for this question!

9)   By evaluating the (4⁄5)-² ⁄(3)⁰ , the result will be

a. 1⁄16
b. 25⁄16
c. 16⁄25
d. 1⁄25
 Answer  Explanation ANSWER: 25⁄16 Explanation: No explanation is available for this question!

10)   On evaluating the (512)1⁄3 , the answer will be

a. 1⁄4
b. 1⁄2
c. 8
d. 1⁄8
 Answer  Explanation ANSWER: 8 Explanation: No explanation is available for this question!