Test Index

WAEC Mathematics 2025 Paper

Question : 3

Total: 50

Express 0.000834 in standard form.

Solution:

Concept:

A decimal is written in standard form as

A \times 10^n

, where

1 \le A < 10

and

n

is an integer.

Explanation:

Count how many places the decimal point must move to make the number lie between 1 and 10.

Starting from

0.000834

, move the decimal point 4 places to the right to get

8.34

Moving right gives a negative power of 10.

Therefore,

0.000834 = 8.34 \times 10^{-4}

This matches option A.

Answer:

8.34 \times 10^{-4}

Go to Question:

Prev Question

Next Question