196,550 views
15 votes
15 votes
Use multiplication to show how how many twenty fourths equal 3/6

User Geofferey
by
3.0k points

1 Answer

18 votes
18 votes

Answer:

10 times

Explanation:

To figure this out, the first thing we will do is to find the LCM (Least Common Multiple). We will do this by making a list of the denominators that we have right now. Right now we have
(20)/(4) and
(3)/(6). We will use 4 and 6 to make a list to find our multiple that is in both lists. (That comes up first)

Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32...

Multiples of 6: 6, 12, 18, 24, 30, 36, 42...

Now, we just realized that we have 24 that are in common with both 4 and 6. Now we will multiply both the numerator and denominator by the same number to have the denominator equal 24.


(20)/(4) * (6)/(6) =
(120)/(24) &
(3)/(6) * (4)/(4) =
(12)/(24)

Now that we have
(120)/(24) and
(12)/(24). We will read the question again about how many
(3)/(6) equal to
(20)/(4). Since we have our fractions, we will add
(12)/(24) multiple times until we get
(120)/(24).


(12)/(24) + (12)/(24) + (12)/(24) + (12)/(24) + (12)/(24) + (12)/(24) + (12)/(24) + (12)/(24) + (12)/(24) + (12)/(24) = (120)/(24)

Therefore,
(3)/(6) equals to
(20)/(4) 10 times.

User Eli Friedman
by
2.5k points