When should you estimate a sum or difference?

When should you estimate a sum or difference?

When you estimate, you find an answer that is close to the exact answer. You can round or you can use front-end estimation to estimate a sum or difference. Estimate the difference of 45,721 21,529. To use rounding, round each number to the nearest thousand.

Can you round a fraction?

To round off a fraction, you first convert the fraction to a decimal. If the division ends in a repeating decimal, you can stop after a certain number of decimal places and round off. Rounding numbers results in an estimated or approximate value.

How do you round a mixed number to a whole number?

Mixed numbers are numbers made up of a whole number and a fraction part. To round a mixed number to the nearest whole number, we look at the numerator number. If the numerator is equal to or greater than half the denominator, then we round up. But, if the numerator is less than half the denominator, then we round down.

What is 3/8 rounded to the nearest whole number?

If you insist on converting 3/8 to a whole number, the best we can do is round the decimal number up or down to the nearest whole number. 3/8 rounded up to the nearest whole number is 1 and 3/8 rounded down to the nearest whole number is 0.

What is 5/8 rounded to the nearest whole number?

Yes, it is. So 5/8 is more than 1/2, so we round up. Therefore, 8 5/8 is closer to 9 than it is to 8.

How do you round a mixed number to the nearest half?

Mixed numbers are numbers made up of a whole number and a fraction part. To round a mixed number to the nearest whole number, we look at the numerator number. If the numerator is equal to or greater than half the denominator, then we round up. But, if the numerator is less than half the denominator, then we round down.

How do you round a fraction to the nearest tenth?

To round to the nearest tenth, write down the number with a decimal point, and find the tenths place directly to the right of the decimal. Then, to the right of the tenths place, look at the number in the hundredths place.

Which is a whole number?

A whole number is an integer that is 0 or greater. The first five whole numbers are 0, 1, 2, 3, and 4. … As the name implies, a whole number is not a fraction. It also cannot be negative. Since integers range from negative infinity to positive infinity, whole numbers are a subset of integers.

What is 983.491 rounded to the nearest whole number?

The number 983.491 rounded to the nearest whole number is 983.