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Round Numbers to the nearest 100 micro-lesson
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Learning time
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In this lesson, we will round large numbers to the nearest hundred. So, when rounding to the nearest hundred, we're trying to find what hundred the number is nearest to. First, we need to identify the hundreds column. It can be useful to circle this. A hundred is any number that has nothing in the tens or units’ columns so we put zeros in these columns, the ones to the right of the hundred’s column. We then need to look in the ten’s column. If there's a four or less, then the digit stays the same, the one that's in the hundred’s column. If there's a five or more, the digit in the hundred’s column goes up by one. Drawing this on a number line can help us. Let's try with 62,647. As in this case, there's a four in the ten’s column. The hundred, which is a six at this point stays the same. And remember, we put zeros in the tens and one’s columns.
Answer time
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Here are some example of questions about this video that kids may be asked in the 1Question app to earn screen time.
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If a number is a 'hundred' what digits will you find in the tens and units columns?
1) 02) 13) 94) 5 -
Round 242,390 to the nearest 100.
1) 2424002) 2425003) 2423004) 242350 -
Round 627,250 to the nearest 100.
1) 6273002) 6272003) 6271004) 627400 -
Round 672,314 to the nearest 100.
1) 6723002) 6722003) 6724004) 672500 -
Round 723,821 to the nearest 100.
1) 7238002) 7237003) 7240004) 723000 -
Round 5,823,782 to the nearest 100.
1) 58238002) 58237003) 58239004) 5824000 -
When rounding to the nearest 100, we round the number up, when what digits are in the tens column?
1) 5, 6, 7, 8 or 92) 1, 2, 3 or 43) 1, 2, 3, 4 or 54) 6, 7, 8, or 9 -
When rounding to the nearest 100, we round down (the digit in the hundreds column stays the same) when what digits are in the tens column?
1) 1, 2, 3 or 42) 1, 2, 3, 4 or 53) 5, 6, 7, 8 or 94) 6, 7, 8, or 9 -
The two columns to the right of the hundreds column are...
1) the tens and units columns.2) the thousands and ten thousands columns.3) the tens and thousands columns.4) there aren't any columns to the right of the hundreds column. -
When rounding to the nearest 100, we are always trying to find...
1) what hundred the number is nearest to.2) what thousand the number is nearest to.3) if there is a hundred near the number.4) what hundred is before the number.
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Meet your educator
Our micro-courses are developed and delivered by qualified educators from around the world.
Natalie Dixon
I qualified to be a teacher in London (UK) in 2013 and have since taught in England and at an international school in the Caribbean. I love helping students to master new skills
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