If you want to round to the first decimal place, look at the second decimal place.
If that's 5 or more, add '1' to the first decimal place, and discard the rest.
If it's less than 5, keep the first decimal place as it is, and discard the rest.
2.543 rounded to the nearest tenth is 2.5 .
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3.3 rounded to 1 decimal place is 3.0.
Go to the second decimal place; if it is less than 5; round down. If it is 5 or greater, round up. So, 1.51 rounded to 1 decimal place is 1.5.
To one decimal place it is rounded to 0.9
Well, isn't that a happy little question! When we round 6.45 to 1 decimal place, we look at the digit in the second decimal place, which is 5. Since 5 is 5 or greater, we round up the first decimal place to 6. So, 6.45 rounded to 1 decimal place is 6.5.
1.9