- If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. Example: 38 rounded to the nearest ten is 40.
- If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down. Example: 33 rounded to the nearest ten is 30.
Then, is .5 rounded up or down?
The reason is that 5 is directly in the middle of the digits we round, so we must round it up half the time, and down half the time. To make this more clear, look at the digits we round to another number: 1, 2, 3, 4 we round down. Notice that 5, if rounded up always, gives us 5 numbers we round up, and 4 we round down.
Additionally, why do we round numbers up and down? Since your son is in elementary school, the simpliest answer is: Rounding up or down helps make is easier & quicker for people to understand the number. By rounding up or down it lets people know *about* what the number is & it helps when your not exactly sure the number is accurate.
Besides, how do you round when there's a 5?
The digit in this place tells you to round up (if it is 6, 7, 8, or 9) or to round down (if it is a 1, 2, 3, or 4). When the value you intend to round off is a five, you MUST look at the previous value ALSO. If it is even, you round down. If it is odd, you round up.
What is 129.257 rounded to the nearest hundredth?
129.257 Rounded to the Nearest Hundredth
| Number | Rounded to Nearest 100th |
|---|---|
| 129.257 | 129.26 |
| 129.258 | 129.26 |
| 129.259 | 129.26 |
| 129.26 | 129.26 |
Why does 5 get rounded up?
Because everyone prefers even numbers. Rounding 5 up means that as many numbers are rounded up as are rounded down. If you consider single-digit numbers, then 0, 1, 2, 3, 4 are rounded down, and 5, 6, 7, 8 and 9 are rounded up.What is rounded to the nearest tenth?
Round to the Nearest Tenth: 0.74 The tenths digit stays the same at 7. Since the remaining digits are after the decimal point you just drop them.What is 1.5 rounded to the nearest whole number?
Following the same logic, one could round to the nearest whole number. For example, 1.5 (pronounced as "one point five" or "one and a half") would be rounded up to 2, and 2.1 would be rounded down to 2.How do you explain rounding?
What is rounding numbers?- Rounding numbers means adjusting the digits (up or down) to make rough calculations easier.
- If the unit of the number is less than five, the number needs to be rounded down.
- If the unit of the number is 5 or above, the number needs to be rounded up.
Why is rounding important?
Rounding numbers makes them simpler and easier to use. Although they're slightly less accurate, their values are still relatively close to what they originally were. Finally, it's often just easier to work with rounded numbers, because exact numbers aren't only required.What is 0.5 rounded to the nearest whole number?
0.5 Rounded to the Nearest Whole Number| Number | Rounded to Nearest Whole Number |
|---|---|
| 0.5 | 1 |
| 1.5 | 2 |
| 2.5 | 3 |
| 3.5 | 4 |
What is the meaning of rounded up?
rounded up; rounding up; rounds up. Definition of round up (Entry 2 of 2) transitive verb. 1 : to collect (animals, such as cattle) by means of a roundup. 2 : to gather in or bring together from various quarters.Do you round up from 5?
Rules for Rounding Here's the general rule for rounding: If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. Example: 38 rounded to the nearest ten is 40. If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down.What does 2.5 round to?
In "banker's rounding" - in its most common form - the . 5 to be rounded is rounded either up or down so that the result of the rounding is always an even number. Thus 2.5 rounds to 2.0, 3.5 to 4.0, 4.5 to 4.0, 5.5 to 6.0, and so on.How do you round to the nearest whole number?
Rounding decimals to the nearest whole number. To round a number to the nearest whole number, you have to look at the first digit after the decimal point. If this digit is less than 5 (1, 2, 3, 4) we don't have to do anything, but if the digit is 5 or greater (5, 6, 7, 8, 9) we must round up.How do you round numbers to the nearest 100?
Rounding rules When rounding to the nearest hundred, look at the TENS DIGIT of the number. If the tens digit is 0, 1, 2, 3, or 4, you will round down to the previous hundred. Notice: the hundreds digit does not change. If that digit is 5, 6, 7, 8, or 9, you will round up to the next hundred.What is 44.197 rounded to the nearest whole number?
44.197 Rounded to the Nearest Whole Number| Number | Rounded to Nearest Whole Number |
|---|---|
| 44.197 | 44 |
| 45.197 | 45 |
| 46.197 | 46 |
| 47.197 | 47 |
