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Multiply two fifths by two to get a common denominator. Then you will have 4 tenths plus three tenths. then add straight across and you will get seven tenths.

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Q: How do you show your work for two fifths plus three tenths?
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Show you how to get three fifths of one hundred?

100/5 =20 20x3=60 is a simple way.

How many times as greater is the value of the digit in the hundredths place as in tenths place?

abc.def I use letters to show the meaning of placeholders in the Arabic decimal fraction system. "c" is the in units place. Five is just 5 on its own. "bc" is in the tens and the units places, 25 for example, twenty plus five. "abc" is in the hundreds place plus the tens place plus the units place. say 325. on the right hand side of the decimal place we start with ... "0.d" or the tenths position. so three tenths is 0.3 "" would be a number of tenths plus a number of hundredths, say 0.38 JCF

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You write the number 3 over the number 10, and a horizontal line in between.

If 3.8 was rewritten to add tenths and hundredths?

If 3.8 was rewritten to show tenths and hundredths?

How do you show nine tenths of one percent as a decimal?

Nine tenths of one percent = 0.009

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Round 7.987 to the nearest tenths?

It is 8.0 : the trailing 0 is necessary to show that it has been rounded to the nearest tenths.

How could you use a meter stick to show tenths and hundreds?

get a ruler

What are three ways to show that two thirds is larger than two fifths?

Convert to a common denominator; convert to decimal; compare denominators (larger denominator = smaller fraction, if the numerator is the same).

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That is it 6 hundredths, not six tenths.

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No. In that case it is 0.0

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18.64 rounded to the nearest tenth is 18.6