Video Transcript
Complete the table below. The number 8376, number rounded to the nearest 10, number rounded to the nearest 100, and number rounded to the nearest 1000.
When we’re rounding to the nearest 10, 100, or 1000, we need to use our knowledge of place value to help. First, we have to find the number we are rounding to. And in the first column, we need to round to the nearest 10. So our 10s digit is seven, seven 10s. Next, we have to move to the digit which is to the right of the 10s digit. This takes us to the ones digit which is six. And the rules tell us that if this digit is less than five, we round down. And if this digit is greater than or equal to five, we round up. As six is greater than five, we know we need to round up. As 8376 is between 8370 and 8380 and we know we need to round up, this means we round up to 8380. 8376 rounded to the nearest 10 is 8380.
Next, we need to round our number to the nearest 100. And the same rules apply. We’re rounding to the nearest 100. So we found our 100s digit. Then we move one place to the right into the 10s place. And as seven is greater than five, that means we need to round up. And as 8376 is between 8300 and 8400, this means we round up to 8400. 8376 rounded to the nearest 100 is 8400.
Finally, we need to round to the nearest 1000. We’re rounding to the nearest 1000. So we need to move to the column to the right which is the 100s place. We have three 100s. Since three is less than five, we need to round down. And 8376 is between 8000 and 9000. As we’re rounding down, that means we round to 8000.
8376 rounded to the nearest 10 is 8380. Rounded to the nearest 100, it’s 8400. Rounded to the nearest 1000, it’s 8000. We use the rules shown here to help us round to the nearest 10, 100, and 1000.