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The number 345 rounded off to the nearest 10 is ______ .

Sagot :

Misspancitcantonidn

Answer:

The number 345 rounded off to the nearest 10 is 350.

Step-by-step explanation:

345 when rounded off to the nearest tens is equal to 350 because the number beside the tens digit is 5. We need to round up.

Rounding Off Numbers

Rounding off numbers is making a number simpler but keeping its value close to what it was. It is the estimated value of a number.

Rules in Rounding Off Numbers

  • If the number right beside the rounding digit is followed by 5, 6, 7, 8, or 9, round up or add 1 to the rounding digit.

  • If the number right beside the rounding digit is 0, 1, 2, 3, or 4, round down or the number will remain the same.

Steps in Rounding Off Numbers

  1. Find the rounding digit using the given place value.
  2. Look at the number right next to it.
  3. Apply which rule to use.
  4. All the next numbers after the rounding digit will be zeros.

Example:

Round off to the nearest hundreds.

87,672 = 87,700

Rounding digit: 6

Next digit: 7

Round up, 6 + 1 = 7, then next numbers are zeros.

29,436 = 29,400

Rounding digit: 4

Next digit: 3

Round down, remain the same so still 4, next numbers are zeros.

To know the different place value, visit the link.

brainly.ph/question/2188561

Rounding Off Decimal Numbers

We also round off decimal numbers. The same rules and steps are applied.

Example:

Round off to the nearest hundredths.

38.528 = 38.53

Rounding digit: 2

Next digit: 8

Round up. In decimal number, there is no need to write the zeros after the rounding digit.

To know the place value of decimal numbers:

brainly.ph/question/2349620

brainly.ph/question/482548

Is estimating and rounding the same?

This is one of the common questions asked by students. Estimating and rounding are strategies used in giving the approximate value of a number. However, they are different.

Rounding is making the number simpler by scaling it slightly up or down. Then, estimating is making a rough guess or calculation about quantities. There are three methods of estimating and rounding is a kind of it.

Three Methods of Estimating

  • Rounding
  • Front-End
  • Clustering

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