Question

Find the least common denominator (LCD) for the fractions.



A.
2

B.
10

C.
30

D.
60

Answer 1

what are your fractions?

Answer 2

The easiest way to find the LCD is to multiply the denominators. So 6*10=?

Answer 3

\[6\times10=60\]

Answer 4

yes so the LCD is 60.

Answer 5

That is a fine and dandy denominator :)
It is not the `least` of which though.

Answer 6

Thanks :)

Answer 7

Can you help with three more though? :))

Answer 8

Look for what numbers they have in common:
\(\large\rm 6=3\cdot\color{orangered}{2}\)
\(\large\rm 10=5\cdot\color{orangered}{2}\)

So your smallest denominator that can be made from 6 and 10 is going to be the result of \(\large\rm 3\cdot5\cdot2\)

Answer 9

oh thanks

Answer 10

If you want me to

Answer 11

yes please

Answer 12

7 goes in to 28 four times
what is one fourth of forty?

Answer 13

in order to get the 28 to 7 we had to divide it by 4 so we need to do the same for the denominators. 40/4=?

Answer 14

\[40\div4=10\]

Answer 15

So a?

Answer 16

yes. very good

Answer 17

Thanks 2 more! :)

Answer 18

ok :)

Answer 19

in order to get the 42 to 7 we had to divide it by 6 so we need to do the same for the numerators. 54/6=?

Answer 20

\[54\div6=9\]

Answer 21

yes so your answer is 9 or D

Answer 22

Yay! Thanks so much! :)

Answer 23

Next one!

Answer 24

you're welcome :)

Answer 25

ok

Answer 26

to find the answer to this you need to find the LCD so 12*20=240. Now we need to change the numerators. So since we multiplied the 12 by 20 we need to do the same with the numerator of that fraction so 7*20=140, so our first fraction is 140/240. Now for the second fraction we multiplied the 20 by 12 so we need to do the same to the numerator so 11*12=132, so our second fraction is 132/240 and 132/240. Which one the numerators is higher? The one with the higher numerator takes up more space and therefore is the larger one.

Answer 27

So we know that they are not equal so C is out

Answer 28

so uh A?

Answer 29

yeah

Answer 30

so A?

Answer 31

No not A because that fraction became 140/240 and that is larger then the other fraction, which is 132/240, and A shows that the second fraction is larger.

Answer 32

Oh, so A is out.

Answer 33

yes

Answer 34

So the only option is B.

Answer 35

yes. which is correct because it shows that the first fraction is larger than the second fraction.

Answer 36

sorry if I confused you on that one

Answer 37

Thanks now i have one last questions :)

Answer 38

k

Answer 39

No, no you didn't confuse anyone thanks for helping me!

Answer 40

you're welcome :)

Answer 41

:)

Answer 42

Well A and B are out because, while the denominators do equal 48 when multiplied together, that is actually not the LCD, 24 is.

Answer 43

yeah.

Answer 44

D?

Answer 45

Now we know that we multiplied the 6 by 4 to get to 24 so we need to multiply the 5 by 4 which equals 20 so our first fraction is 20/24. Since we multiplied 8 by 3 to get 24 we need to multiply the 3 by 3 which equals 9 so our second fraction is 9/24.

Answer 46

Yes

Answer 47

very good :)

Answer 48

Yay! Thanks for all the help!! :) You're the best! :))

Answer 49

Got a 90% :) thanks!

Answer 50

Lol you're welcome. I'm glad that I could help :)

Answer 51

which one did you miss? If you don't mind me asking

Answer 52

Let me check, hold on. :)

Answer 53

This one was incorrect, the first one.

Answer 54

It was actually 30 but at least i got a good grade. :)

Answer 55

Ok I am sorry that I got it wrong. Good job on your grade :)

Answer 56

No need to be sorry because if you wouldn't have helped me i would've gotten a bad grade, thanks again i really appreciate it! :D

Answer 57

You're welcome. Have a nice day :)

Answer 58

You too! :) Thanks again!