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Answer:
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 is making a number simpler but keeping its value close to what it was. It is the estimated value of a number.
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
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
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.
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