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Round the following to three significant figures:
a) 0.00031075

Round the following to three significant figures: $\newline$ $0$ . $00031075$

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Convert between standard and scientific notation

Full solution

Q. Round the following to three significant figures:

\newline

0

.

00031075

Identify First Non-Zero Digit: Identify the first non-zero digit in $0.00031075$ . $\newline$ First non-zero digit is $3$ .
Count Significant Figures: Count three significant figures starting from the first non-zero digit. $\newline$ Significant figures are $3$ , $1$ , and $0$ .
Determine Rounding Digit: Determine the digit following the third significant figure for rounding. $\newline$ The digit following $0$ is $7$ , which is greater than $5$ .
Round Last Significant Figure: Round up the last significant figure from $0$ to $1$ . $\newline$ New number after rounding is $0.000311$ .

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