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ADDITION
OF
DISSIMILAR
FRACTIONS
Find the least common denominator
(LCD) of the following sets of
fractions.
1. 1/3 , 1/5
2. 1/7 , 5/8
3. 2/3 , 1/6
4. ¾ , ...
Study and Learn
Sarah bought ½ kilogram of
lanzones and ¼ kilogram of grapes
for her grandmother. How many
kilograms of fr...
What are we going to add?
½ and ¼
What kind of fractions are ½ and ¼?
They are dissimilar fractions.
Do you know how to ad...
Through Illustration
Change to similar
fractions ½ + ¼
2/4 + ¼
Add the
numerators
and use the
same
denominators
2/4 + ¼ =3...
By computation
Step 1
Find the least common denominator
1
2 4
1
4 4
=
=
Step 2
Find fractions equal to the given fraction
...
Let’s have another example
3 3 5 15 15
9 45 9 5 45 45
+ 3 3 9 27 27
5 45 5 9 45 45
43
45
The sum is 43
45
= x =
= x =
=
Solve and copy the correct answer on your paper.
1)
2)
3) 2/3 + ¼ = ( 8/12, 10/12, 11/12)
2/5 + ½ + ¼ = (1 3/20, 1 1/20, 1...
In adding dissimilar fractions, follow these
steps:
● Find the LCD of the given fractions.
● Change the fractions into sim...
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Ppt addition of dissimilar fractions (loids)

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Ppt addition of dissimilar fractions (loids)

  1. 1. ADDITION OF DISSIMILAR FRACTIONS
  2. 2. Find the least common denominator (LCD) of the following sets of fractions. 1. 1/3 , 1/5 2. 1/7 , 5/8 3. 2/3 , 1/6 4. ¾ , 1/2 5. 3/5 , 1/10
  3. 3. Study and Learn Sarah bought ½ kilogram of lanzones and ¼ kilogram of grapes for her grandmother. How many kilograms of fruits did she buy in all? What shall we do to solve the problem? We shall add.
  4. 4. What are we going to add? ½ and ¼ What kind of fractions are ½ and ¼? They are dissimilar fractions. Do you know how to add dissimilar fractions? Look closely as we solve the problem.
  5. 5. Through Illustration Change to similar fractions ½ + ¼ 2/4 + ¼ Add the numerators and use the same denominators 2/4 + ¼ =3/4
  6. 6. By computation Step 1 Find the least common denominator 1 2 4 1 4 4 = = Step 2 Find fractions equal to the given fraction 1 2 2 2 2 4 1 1 4 4 x = = Step 1 Add the numerators and use the common denominators. Reduce to lowest if possible. 3 4 =
  7. 7. Let’s have another example 3 3 5 15 15 9 45 9 5 45 45 + 3 3 9 27 27 5 45 5 9 45 45 43 45 The sum is 43 45 = x = = x = =
  8. 8. Solve and copy the correct answer on your paper. 1) 2) 3) 2/3 + ¼ = ( 8/12, 10/12, 11/12) 2/5 + ½ + ¼ = (1 3/20, 1 1/20, 1 5/20) 3/4 + 5/6 + ½ = (2 3/12, 2 2/12, 2 1/12)
  9. 9. In adding dissimilar fractions, follow these steps: ● Find the LCD of the given fractions. ● Change the fractions into similar fractions. ● Add. Always express the answer in lowest terms.

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