This document provides guidance on adding dissimilar fractions. It explains that to add dissimilar fractions, one must first find the least common denominator (LCD), then rename each dissimilar fraction as an equivalent fraction using the LCD, and finally add the numerators and write over the denominator. Several examples are provided to demonstrate how to find the LCD, rename fractions, and perform the addition. Assessment questions and enrichment activities are also included to help students practice and apply the skill of adding dissimilar fractions.
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Fraction sim by Ivy Rose P. Pastor
1.
2. Least Learned Skill:
Add dissimilar fractions.
Sub-task:
Find the LCD
Change dissimilar fraction to similar
fraction
3. Just
remember!
GUIDECARD
οΆ Similar Fractions are fraction whose
denominators are the same
π
π
,
π
π
οΆ Dissimilar Fractions are fraction whose
denominator is different
π
π
,
π
π
οΆ LCD β Least Common Denominator
4. Just
remember!
GUIDECARD
οΆ Find the least common denominator
οΆ Rename each dissimilar fraction to its
equivalent fraction using the LCD
οΆ Add the numerator and write over the
denominator
οΆ Simplify the resulting fraction if possible
5. To find the least common denominator (LCD) of two or
more denominators, we mean to find the LCM of the
denominators.
π
π
,
π
π
5 = 5, 10, 15, 20, 25, 30 5 = 1 x 5
4 = 4, 8, 12, 16, 20, 24 4 = 1 x 4
LCD = 20 LCD = 5 X 4 = 20
Just
remember!
GUIDECARD
6. GUIDECARD
Just
remember!
Rename each dissimilar fraction to
its equivalent fraction using the
LCD
π
π
=
ππ
ππ
π
π
=
π
ππΓ·=5
x
Γ·=4
x
ο Divide the LCD by the
denominator
ο Multiply the quotient by
numerator
12. ACTIVITYCARD
Use unit region to change to similar fractions.
π
π
=
π
π
=
π
π
=
π
π
=
π
π
=
π
π
=
13. ACTIVITYCARD
Use unit region to change to similar fractions.
π
π
=
π
π
=
π
π
=
π
π
=
π
π
=
π
π
=
14. ASSESSMENTCARD
Add the
numerator and
write over the
denominator
Donβt forget
to remember.
To add
dissimilar
fractionβ¦.
Rename each
dissimilar
fraction to its
equivalent
fraction using
the LCD
Find the least
common
denominator
21. ENRICHMENTCARD
UNDERSTAND
PLAN
SOLVE FOR THE ANSWER
LOOK BACK
Solve the problem using Polyaβs Technique.
Ivy solved
π
π
her math homework on Saturday and
π
π
of it on Sunday. What Fraction of her homework did she
solve during those two days?
22. ENRICHMENTCARD
UNDERSTAND
π
π
of her homework solved on Saturday,
π
π
of her homework solved on
Sunday,Fraction of her homework solved in two days is unknown
PLAN add
π
π
and
π
π
SOLVE FOR THE ANSWER
π
π
+
π
π
=
π
π
+
π
π
=
π+ π
π
=
π
π
(fraction of her homework she solve for
two days)
LOOK BACK
Fraction Ivy solved for Saturday + Fraction Ivy solved for Sunday
π
π
+
π
π
=
π
π
(fraction of her homework she solve for two days)
Solve the problem using Polyaβs Technique.
Ivy solved
π
π
her math homework on Saturday and
π
π
of it on Sunday. What Fraction of her homework did she
solve during those two days?
23. ENRICHMENTCARD
Solve the problem using Block Model Approach.
Ivy solved
π
π
her math homework on Saturday and
π
π
of it on Sunday. What Fraction of her homework did she
solve during those two days?
π
π
+
π
π
= +
Ivy solved for Saturday
Ivy solved for Sunday
24. ENRICHMENTCARD
Solve the problem using Block Model Approach.
Ivy solved
π
π
her math homework on Saturday and
π
π
of it on Sunday. What Fraction of her homework did she
solve during those two days?
π
π
+
π
π
= +
Ivy solved for Saturday
Ivy solved for Sunday
+
Ivy solved for Saturday
Ivy solved for Sunday
π
π
(fraction of her homework she
solve for two days)
Few Reminders in using this presentation.
Be aware of the links and action picture in each slides.
Review the whole presentation together with the link to get used to it
Few Reminders in using this presentation.
Be aware of the links and action picture in each slides.
Review the whole presentation together with the link to get used to it