math

posted by .

Compare fractions-write in order least to greatest. My daughter wrote them incorrectly at first, then we found what the answer should be, but can you explain to her why the answers are what they are. Thank you.

1. 2/5, 1/10, 3/20

2. 1/3, 3/8, 2/9

• math -

If you plug them into a calculator, you would get decimals. You can use those decimals to see which is least or greater. Atleast that is how I do it.

• math -

Convert all the fractions so that they all have the same denominator (the number below the line). That way, you can tell how big they are relative to one another just by looking at the numerator (the number above the line).

(#1.)

2/5, 1/10, and 3/20 can all be converted so that they have a common denominator of 20:

2/5, when you multiply both the top and bottom by 4, becomes 8/20.

1/10, when you multiply both the top and bottom by 2, becomes 2/20.

3/20 already has a denominator of 20.

2/20 < 3/20 < 8/20
so 1/10 < 3/20 < 2/5

----------------------------------------

(#2.)

Do the same thing as in #1, except now make the common denominator 72, since 9, 3, and 8 can all go into 72 evenly.

Similar Questions

1. math

Compare fractions-write in order least to greatest. My daughter wrote them incorrectly at first, then we found what the answer should be, but can you explain to her why the answers are what they are. Thank you. 1. 2/5, 1/10, 3/20 answer----1/10, …
2. math HELP!!

. Adam wants to compare the fractions 2 5 1  6 , and 1 3 . He wants to order them from least to greatest and rewrite them so they all have the same denominator. Explain how Adam can rewrite the fractions.
3. math

Adam wants to compare the fractions 2/5. 1/6. and 1/3. He wants to order them from least to greatest and rewrite them so they all have the same denominator. Explain how Adam can rewrite the fractions.
4. Math

Rudulpho bought a set of wrenches to work on his car. He bought the following sizes 7/8 3/8 3/4 and 1/2. he wants to hang these on his garage wall in order from greatest to least. Which list shows the order in which he should have …
5. Math

Prompt. Use equivalent fractions to order therse fractions from least to greatest: 2/3,1/2, 4/12, 5/6. Explain the steps you took to find your answer.
6. Math

Adam wants to compare the fractions 3/12, 1/6, and 1/3. He wants to order them from least to greatest and rewrite them so they all have the same denominator. Explain how adm can rewrite the fractions.
7. math fractions

ADAM WANTS TO COMPARE THE FRACTIONS 3/12,1/6,AND1/3.HE WANTS TO ORDER THEM FROM LEAST TO GREATEST AND REWRITE THEM SO THEY ALL HAVE THE SAME DENOMINATOR?
8. Math

Adam wants to compare the fractions 2/5, 1/6 and 1/3. He wants to order them from least to greatest and rewrite them so they all have th same denominator. Explain how Adam can rewrite the fractions.
9. Math

Put these fractions in order from least to greatest.2/5 3/4 and 1/2. I am trying to help my daughter with her homework. Would you please explain to me how the easiest way to do this.
10. Math

Describe two ways to determine the larger of two fractions. A. Compare fractions by writing fractions as mixed numbers B. Compare fractions with the same denominator by comparing the numerators and compare fractions with different …

More Similar Questions