adding fractions Flashcards

1
Q

Whatever you do to the bottom….

A

You do to the top

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2
Q

You have to have the same denominator

A

The top doesn’t matter

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3
Q

1/2 + 3/4

A

Both denominators have to be the same number

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4
Q

Find the LCM (least common denominator)

A

The LCM of 2 and 4 is 4, 4x1 and 2x2

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5
Q

So then it will change to 1/4 + 3/4

A

but in the first slide it told us that what ever you do to the bottom you do the top

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6
Q

The denominator of the first fraction was 2

A

and that turned into 4. So 4 divided by 2 is 2

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7
Q

1/2 + 3/4 turned into 1/4 and 3/4

- -

A

I put a slash underneath the 2 and the 4 so you could see that the 2 x 2 = 4

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8
Q

So whatever you do to the bottom you do to the top

A

We multiplied the bottom by 2 so we have to multiply the top by 2

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9
Q

So the 1 would turn into a 2

A

That would make the fraction 2/4

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10
Q

So then the problem would turn into 2/4 + 3/4

A

Then you just add!

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11
Q

2+3=5

A

and the denominator stays the same

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12
Q

So 1/2 + 3/4 would turn into 2/4 + 3/4. 2 + 3 = 5
We keep the denominator.
1/2 + 3/4 =…….

A

5/4!!!

If you simplify it, it will turn into 1 1/4

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13
Q

Lets try a different problem

A

5/8 + 2/6

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14
Q

The LCM of 8 and 6 is 24

A

The 5/8 will turn into 5/24
whatever you do to the bottom you do to the top
24 divided by 8 is 3
So 5 x 3 is 15

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15
Q

they problem then would turn into 15/24 +……

A

The next fraction was 2/6

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16
Q

24 divided by 6 is…….

A

4!!!
whatever we do to the bottom we do to the top!
So 4 x 2 = 8

17
Q

The fraction would turn from 2/6 to 8/24

A

Lets put that all together

18
Q

15/24 + 8/24 is……

A

23/24!!!
we don’t need to simplify it
remember the bottom stays the same

19
Q

Try doing some on your own!!!

A

Don’t flip the card until you have your answer

20
Q

3/7 + 8/9

A

83/93 or if you simplify it’s 1 20/63

21
Q

4/5 + 2/3

A

22/15 or if you simplify it’s 1 7/15

22
Q

If you have any questions please email me and we can schedule a meet together

A

This is the end of this assignment!!!