# Class 8 Maths MCQ – Use of Exponents to Express Small Numbers in Standard Form

This set of Class 8 Maths Chapter 12 Multiple Choice Questions & Answers (MCQs) focuses on “Use of Exponents to Express Small Numbers in Standard Form”.

1. Express the following in the standard form: 0.000000021.
a) 2.1 × 10-7
b) 2.1 × 10-9
c) 2.1 × 10-10
d) 2.1 × 10-8

Explanation: 0.000000021 = 2.1 × 10-8.

2. What is the standard form of 80460000?
a) 8.046 × 107
b) 8.046 × 106
c) 8.046 × 109
d) 8.046 × 108

Explanation: 80460000 = 8.046 × 107.

3. Find the usual form of 2.33 × 10-3.
a) 0.002033
b) 0.0000233
c) 0.00233
d) 0.000233

Explanation: 2.33 × 10-3 = 0.00233.

4. What is the Usual form of 16.8 × 105?
a) 16800000
b) 1680000
c) 168000
d) 16800

Explanation: 16.8 × 105 = 1680000.

Sanfoundry Global Education & Learning Series – Mathematics – Class 8.

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To practice all chapters and topics of class 8 Mathematics, here is complete set of 1000+ Multiple Choice Questions and Answers.

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