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Class 8 Exam  >  Class 8 Tests  >  Test: Exponents And Powers- 1 - Class 8 MCQ

Test: Exponents And Powers- 1 - Class 8 MCQ


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10 Questions MCQ Test - Test: Exponents And Powers- 1

Test: Exponents And Powers- 1 for Class 8 2024 is part of Class 8 preparation. The Test: Exponents And Powers- 1 questions and answers have been prepared according to the Class 8 exam syllabus.The Test: Exponents And Powers- 1 MCQs are made for Class 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Exponents And Powers- 1 below.
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Test: Exponents And Powers- 1 - Question 1
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(−2)5÷ (−2)8 = ?

Detailed Solution for Test: Exponents And Powers- 1 - Question 1

Test: Exponents And Powers- 1 - Question 2
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Write the expression using exponents: 61 × 61 × 61 × 61 × 61

Detailed Solution for Test: Exponents And Powers- 1 - Question 2

Answers is  61^5 because 61 is multiplied 5 times

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Test: Exponents And Powers- 1 - Question 3
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Find the value of x, if 32 = 2x.

Detailed Solution for Test: Exponents And Powers- 1 - Question 3

Factorisation of 32 is 2 x 2 x 2 x 2 x 2
32 = 25
X = 5

Test: Exponents And Powers- 1 - Question 4
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The repeated factor in an exponential expression is called ____.
Detailed Solution for Test: Exponents And Powers- 1 - Question 4

The repeated factor in an exponential expression is called an Exponent.

Test: Exponents And Powers- 1 - Question 5
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A group of students were given an assignment to collect different types of leaves. The group collected 32 types of leaves. Represent the number of leaves collected in the form of exponential expression with its base being indivisible.
Detailed Solution for Test: Exponents And Powers- 1 - Question 5

32 = 2 x 2 x 2 x 2 x 2 =  25

Therfore, the correct answer is A.

Test: Exponents And Powers- 1 - Question 6
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Find the value of the expression a2 for a = 10.
Detailed Solution for Test: Exponents And Powers- 1 - Question 6

Multiply 10 twice i.e 10 × 10 because they asked 'a' to the power 2 . so multiply by twice, the solution is 100 .

Test: Exponents And Powers- 1 - Question 7
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Evaluate the exponential expression (−b)4 × (−b)5, for b = 4.
Detailed Solution for Test: Exponents And Powers- 1 - Question 7

(-b)4= (-44) =(-4 × -4) × (-4 × -4)

=16×16 (as -×-=+) =256

(-b)5=1024

so, -1024 × 256 = -262144

Test: Exponents And Powers- 1 - Question 8
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When we have to add numbers in standard form, we convert them into numbers with the ________ exponents.
Detailed Solution for Test: Exponents And Powers- 1 - Question 8

For example , 2.38 x 104 + 21.1 x 103 = 2.38 x 104 + 2.11 x 104 = 4.49 x 104

Test: Exponents And Powers- 1 - Question 9
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Simplify and write in exponential form: (−2)−3 × (−2)− 4
Detailed Solution for Test: Exponents And Powers- 1 - Question 9

(-2)-3*(-2)-4 = (-2)(-3)+(-4)  = (-2)(-7)

Test: Exponents And Powers- 1 - Question 10
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Evaluate: 82
Detailed Solution for Test: Exponents And Powers- 1 - Question 10

82 = 8 x 8 = 64

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