Round To Two Significant Digits

[mathdad]

What does it mean to round to TWO SIGNIFICANT DIGITS?

SAMPLE:

Round 542,867.21054031 to two significant digits.

Does this means to round to two decimal places or does it mean to round to the tens place?

 

[skeeter]

What does it mean to round to TWO SIGNIFICANT DIGITS?

SAMPLE:

Round 542,867.21054031 to two significant digits.

Does this means to round to two decimal places or does it mean to round to the tens place?

$5.4 \times 10^5$

recommend you research the topic of significant digits ...

Rounding and Significant Digits | Purplemath

 

[mathdad]

$5.4 \times 10^5$

recommend you research the topic of significant digits ...

Rounding and Significant Digits | Purplemath

1. Thank you for the link provided.

2. I also found some helpful youtube clips.