Denominator. 5th grader homework

Mathematics
Tutor: None Selected Time limit: 1 Day

Mar 19th, 2015

2. 12 and 2 (12 + 2 = 14)

3. 15 and 2 (15 + 2 = 17)

4. 5 and 4 (5 - 4 = 1)

5. 25 and 20 (25 - 20 = 5)

6. 14 and 4 (14 - 4 = 10)

Explanation: The least common denominator of a set of fractions is the lowest number that is a multiple of all the denominators.  So, to figure problem #2, you would list the common denominators of 24: 1 and 24; 2 and 12; 3 and 8; 4 and 6.  Then, find the two whose sum is 14, which are 2 and 12.

Mar 19th, 2015

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