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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, 3/20, 2/5

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

  • math -

    You can see the correct order by changing the fractions so that they have a common denominator.

    1/10 = 2/20
    3/20 = 3/20
    2/5 = 8/20

    2/9 = 16/72
    1/3 = 24/72
    3/8 = 27/72

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