module in math grade iv
DESCRIPTION
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Directions : Answer the following questions. Choose the correct answer from the box
given below .
1. It is a figure with two pairs of parallel sides _________.
2. A parallelogram with four congruent angles, and all angles are right
angles___________.
3. It has only one pair of parallel sides _________.
4. It has a formula of A=bxh or A=bh ___________.
5. The base and the line representing the height from _____________.
TRAPEZOID RECTANGLE
RIGHT ANGLE
PARALLELOGRAM
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To Understand and answer the given problem carefully.
To be able to learned the different formula’s and to find the area of figure.
To be able to develop your mind and to answer the given sample problem.
To Understand and answer the given problem carefully.
To be able to learned the different formula’s and to find the area of figure.
To be able to develop your mind and to answer the given sample problem.
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Hello ! My Name is Jake Russell B. Lira , and
welcome again to my module in Mathematics about
finding the areas of the given figure by usin g the
formula .
My module consists of activities and exercises to help
you understand clearly . So I hope that you like it too,
like my past module !!
Have fun and enjoy !!
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AREA OF PARALLEOGRAMS
A C
A Figure with
B D
A Figure with two parallel sides is a PARALLEOGRAM .
Formula : A=bxh or A=bh
Example : Base = 7cm
Height = 3cm
A = 7cmx3cm
A = 21 cm
Two straight lines are said to be parallel when they do not meet.
AC is Parallel to BD.
AB is Parallel to CD.
AREA OF A TRAPEZOiD
A B
C D
The distance between the upper and lower bases in figure A is it’s Height.
Side AB And CD are called Bases.
Example :
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B1= 5
B2= 7
H= 4
A= (b1+b2) 4
_______
2
=(5+7) x4
_____
2
= 12
___x4
2
=6x4
= 24
AREA OF A RECTANGLE
4m
7m
If the area is called A, the Length L, And the width W, then A=LxW.
A= LxW
A= 7x4
A= 28
Find the area of each parallelogram, using the formula (A=bxh or A=bh )
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1. 13 dm
20 dm
2. 3.5m
2.4m
3. 12m
6.02m 5.
40cm
4.
50 dm 36cm
Find the area, using the formula
26 dm
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A= 1 (b1+b2)h
___ 2
1. B1 = 10m
B2= 13m
H= 5m
A= ?
2. B1= 25cm
B2= 35cm
H= 15 cm
A= ?
3. B1= 52m
B2= 23m
H= 25 m
A= ?
4. B1= 5m
B2= 11m
H= 7 m
A= ?
5. B1= 15m
B2= 6m
H= 10 m
A= ?
Find the area of the rectangle using the formula A=LxW.
1. L = 5cm
W= 2cm
A= ?
2. L = 6cm
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W= 3cm
A= ?
3. L = 8cm
W= 5cm
A= ?
4. L = 3cm
W= 7cm
A= ?
5. L = 7dm
W= 5dm
A= ?
Give the formula of the ff. && answer the problem below .
1. Formula of a Rectangle.
2. Formula of a Parallelogram.
3. Formula of a Trapezoid.
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4. A Roof is in the shape of a trapezoid with an upper base of 15 m, a lower base of
18 m, and a height of 3 m. what is it’s area ?
5. A garden is in the shape of a parallelogram, with a base of 12m and a height of 7.8
m. what is it’s area ?
6. Mr.Davi’s wanted to find the area of his garden . He measured and found out that
it was 8 meters wide. What was the area ?
PRE-TEST
1. Parallelogram
2. Rectangle
3. Trapezoid
4. Parallelogram
5. Right Angle
TASK1
1. A=bxh
A= 260dm
2. A=bxh
A= 8.40m
3. A=bxh
A= 72.24m
4. A=bxh
A= 1300dm
5. A=bxh
A= 1440cm
TASK2
1. A= 23m
2. A= 450cm
3. A= 937.5m
4. A=56m
5. A=105m
TASK3
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1. A= 10cm
2. A= 18m
3. A= 40cm
4. A= 21m
5. A= 35dm
POST-TEST
1. A= LxW
2. A= Bxh or A=bh
3. A= 1 h (b1+b2)
__
2
4. 49.5 m
5. 93.6 m
6. 56 m
Module In
Math