WEBVTT
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Round 2.8652 to two decimal places.
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The first thing to do with this question and this number is have a look at what would be the first decimal place.
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Well, the first decimal place is the first digit after the decimal point, so to the right of the decimal point.
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So therefore, if we want to round this number to two decimal places, we’re gonna have a look at the second decimal place, which is actually going to be the digit to the right of this, so in this case the six.
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What I’ve done is I’ve actually drawn a vertical line down after the six so we know that this is what we’re looking at.
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Now what we need to do to be able to round is actually look at the digit or place value to the right of this.
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And in that place, we actually have a five.
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Now if this is actually a number less than five, then the six would actually remain the same; we wouldn’t change it.
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However, as five is actually greater than or equal to five, then we’re actually gonna round the six up.
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So therefore, it’s gonna round from a six to a seven.
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So we can say that 2.8652 is equal to 2.87 rounded to two decimal places.
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And that’s what two dp stands for.
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It’s worth mentioning one common mistake that I’ve seen a few students make at this point.
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When you actually see that the number after the digit you’re looking at is actually five or greater than that, then what we do is, like I said, we round up the previous digit, so we rounded the six to a seven.
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Do not just swap the digits.
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So don’t say that it’d be 2.85.
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That’s not what happens.
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But I have seen that as a common mistake.