Lesson 60
Comparing
Dissimilar
Fractions
By: Sir. Rei
5/2
1/2
3/4
7/4
8/5
7/2
6/3
5/4
Telling whether the
fractions are similar or dissimilar.
Drill
5/3
7/4
9/6
1/8
1/4
8/4
2/4
3/7
5/7
7/7
6/8
8/8
Review
Write >, < or = in the box.
>
>
<
<
Motivation
Yesterday, these children had these snacks:
Angela= 1/8 of pie
Angelu= 1/4 of pie
Renz= 1/5 of pie
Guess. Who do you think ate the biggest piece?
Presenting of Lesson
What kind of fractions these are.
1/2
1/3
1/4
1/5
1/2
1/3
1/4
1/5
What do you call this kind of fractions?
Dissimilar fractions
How will you compare 1/2 and 1/5?
1/2
1/5
>
What do you notice with their numerators? denominators?
What kind of fractions are these?
(DissimilarFractions)
How will you classify these fractions
in comparison to one whole?
(They are fractions with more or less than 1.)
How do you compare these sets of fractions?
What do you notice with the fractions as their denominator gets bigger?
What do you notice with their numerators? denominators?
What do you call this kind of fractions?
How will you classify these fractions in comparison with one whole?
(
Short way of comparing fractions.
Example: Compare 3/4 and 2/5
Cross Product Method
Step 1: Multiply the numerator of the first fraction with denominator of the second fraction. Place the product on top of the first fraction.
3 x 5 = 15
Step 2: Multiply the denominator of the first fraction with numerator of the second fraction. Place the product on the top of the second fraction.
2x4=8
Step 3: The fraction with the greater/bigger product on top has the
greater/bigger value.
3
4
2
5
X
8
15
So, 3/4 is greater than 2/5.
Processing the Activities
How do we compare:
a.) dissimilar fractions which are less than one having the same
numerators?
b.) dissimilar fractions which are more than one having also the same
numerators?
c.) dissimilar fractions which have different numerator and
denominator with illustrations? without illustrations?
Which do you think is the most convenient way to compare fractions?
Why?
If you compare pair of fractions using the illustration and cross product
method, did you find
the same answers?
Reinforcing the Concept
Paghambingin ang pares ng fraction sa bawat bilang. Isulat sa sagutang papel ang mga simbolo >, <, at =.
Summarizing the Lesson
What symbols of relation do we use in comparing fractions?
To compare fractions, we use the symbols of relation such as:
> read as “is greater than”
< read as “is less than”
= read as “is equal to” or “equals”
. Applying to New and Other Situations
Sipiin sa inyong kuwaderno ang mga figure sa ibaba.
Kulayan ang lahat ng fraction na higit sa 2/3 ng asul at pula naman kung mas maliit sa 2/3.
Evaluation
A. Gamitin ang cross product method sa paghahambing ng sumusunod na fraction. Isulat ang >, <, at = sa inyong sagot sa sagutang papel.
B. Isulat ang salitang Tama sa patlang kung ang paghahambing ng dalawang fraction sa ibaba ay tama at Mali kung hindi. Ipakita ang inyong solusyon at isulat ang sagot sa inyong kuwaderno.
HOMEWORK
Pagkumparahin ang dalawang fraction sa bawat bilang gamit ang >, <, at =. Isulat sa kuwaderno ang inyong sagot.
Answer Key: 1) > 2) < 3) < 4) < 5) <
6) > 7) < 8) < 9) > 10) >