How can you use place value to round $21.38 to the nearest tenth of a dollar?

Answer 1

#$21.38# to tenth place, it becomes #$21.40#.

When a number is rounded to the nearest tenth or hundredth, it indicates that it is approximated; a number beyond the tenth or hundredth is not required for this.

As we have in decimal number system, a number from #0# to #9# at a place,
if we have a number from #0# to #4#, we remove the numbers beyond those desired completely - for example if a number is #3.14159# and we need to round it to nearest hundredth, as we have #1# next to number in hundredth place, we just ignore it and write #3.14#.
if we have a number from #5# to #9#, we remove the numbers completely, but add #1# to the last desired digit- for example in the given case #$21.38# and we need to round it to nearest tenth, as we have #8# next to number in tenth place, we ignore it but add #1# to #3#, which is the last digit and rounding #$21.38# to tenth place, it becomes #$21.40#.
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Answer 2

To round $21.38 to the nearest tenth of a dollar using place value, we look at the hundredths place.

Since the digit in the hundredths place is 8, which is greater than or equal to 5, we round up.

So, 21.38roundedtothenearesttenthofadollaris21.38 rounded to the nearest tenth of a dollar is 21.40.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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