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March 1, 2015

March 1, 2015

Posted by **deb** on Wednesday, March 11, 2009 at 8:59pm.

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 -
**Chopsticks**, Wednesday, March 11, 2009 at 9:35pmIf 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 -
**David**, Wednesday, March 11, 2009 at 9:37pmConvert 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.

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