workbook 1, fourth grade mathematics of basic education
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Workbook 1, Fourth Grade Mathematics of Basic Education, It is owned by the Secretary of
State in the Office of Education, it was prepared by teachers from the Departmental
Departments of Education, in the framework of the national emergency COVID-19, in
response to the needs of monitoring the teaching-learning process in government
educational centers from Honduras, CA
Presidency of the Republic
Secretary of State in the Office of Education
Secretariat for Administrative and Financial Affairs
Undersecretary for Technical Pedagogical Affairs
General Directorate of Curriculo and Evaluation
General Sub-Directorate for Basic Education
Departmental Directorate of Education of Cortés
General Directorate of Educational Modalities
Subdirección General de Educación para Pueblos Indígenas y Afrohondureños
Adaptation
Departmental Directorate of Education of Cortés
Valle de Sula Regional Permanent Training Center
Ana Cristina Padilla Gutiérrez
Oneyda Beyorith Estéves Zuniga
Curriculo Review
General Sub-Directorate for Basic Education
Riccy Barrientos
Lilian Elizabeth Gradiz
Technical-graphic and pedagogical review
General Directorate for Technological and Educational Innovation
Desing and Diagramming
Arlen Adalixi Llanos Hernández
Eleazar Tomé Escobar
© Secretary of Education
1st street, between 2nd and 4th avenue of Comayagüela, MDC,
Honduras, CA
www.se.gob.hn
Workbook 1 - Mathematics, Fourth Grade
2020 single edition
FREE DISTRIBUTION - SALE FORBIDDEN
Presentation
In the face of the national emergency generated by Covid-19, boys, girls,
adolescents, youth, fathers, mothers and guardians, the Ministry of
Education makes this study and work tool available for the I, II and III cycle
of Basic Education (1st to 9th grade) that will allow you to continue your
studies on a regular basis, guaranteeing that you can stay at home and at
the same time can achieve the relevant knowledge and develop skills in
the area of Mathematics.
Dad, mom, tutor and teacher will help you review each lesson and clarify
any doubts you may have. His job is to develop the activities, exercises and
problems that arise in the workbook, in an orderly, creative and clean way,
to later present it to his teachers when they return to the Educational
Center.
Secretary of State in the Office of Education
1
Mathematics/ Fourth Grade
ICONS:
Icon Indicator
Remember the knowledge already acquired in previous years.
Indicates solving the exercises that are proposed.
It indicates a very important point to consider.
Indicates getting comfortable to work on the exercises.
Indicates the definition of the concept under study.
Used to find a definition in a dictionary.
Point out an important concept.
2
Mathematics/ Fourth Grade
UNIT 2 EXPECTATION OF ACHIEVEMENT CONTENTS
Angles
• They identify angles and their
elements.
• They read and know angles
in different positions and
trajectories
• They recognize opposite
angles by their vertex
• Identify adjacent angles.
• Concept of angles
and its elements
• Angle unit: degree
• Use of conveyor
• Sharp and obtuse
angles
• Opposite and
adjacent angles.
UNIT 3 EXPECTATION OF
ACHIEVEMENT CONTENTS
Multiplication
• They solve real-life
problems that involve
multiplying numbers.
• They use the calculator
or computer to check
the result of the
multiplications.
• Let's multiply by U
(all products are less
than 10)
• Multiplication by U
(there are products
greater than 9)
• Associative property
of multiplication
• Multiplication by 10
and 100
• Multiplication by D0
and C00
• CDU x CDU
multiplication
• Short form of
multiplication
• Short form in the
multiplier (when
there is 0 in the
multiplier)
• Changing the order
of the factors
• Exercises
3
Mathematics/ Fourth Grade
SOLVE ADDITION, SUBTRACTION, MULTIPLICATION AND DIVISION
PROBLEMS
Objectives:
1. Confirm what they have learned by solving the exercises.
Solve real-life exercises using subtraction, addition, multiplication, and
division.
Exercises
one. According to statistics, in the year 2,001 the population of the
department of
Ocotepeque was 108, 029 inhabitants and that of Copán was 288,766.
How many people live in these two apartments?
How many more people have the department of Copán than that of
Ocotepeque?
2. If José receives 5 Lempiras a day from his parents.
How many lempiras will José have in 5 months? _______
If after a while José has 120 Lempiras
How many days have passed to have that amount of money? _______
3. 2 trucks go, each truck carries 4 tanks with water and each tank contains
37 liters of water.
How many liters of water are there in total?
4
Mathematics/ Fourth Grade
UNIT 2
THE ANGLES
Objectives:
1. Know the concept of angle, comparing and verifying
2. Experiment the change in the opening (amplitude) of the angles by
the rotation of one of the rays.
Let's remember:
Lesson 1: Let's Know Angles
The four angles formed by two lines that intersect
perpendicularly are right angles. The corners of
squares and rectangles are right angles.
The opening formed by two angles with a
common vertex is called Angle
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Mathematics/ Fourth Grade
A. Compare the angle opening between the brackets.
B. We are going to superimpose two circles of cardboard paper of
different color as in the drawing and we will form several angles by
rotating one of the two circles.
1. Build a 180 degree angle
In the angle of the drawing (5), the OB side and the OA side form a line.
This angle is called the flat angle.
Each angle does not depend on the length of its sides, but depends
on the opening of its sides
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Mathematics/ Fourth Grade
C. The protractor is used to measure angles.
We will investigate the protractor graduations.
When representing the measure of an angle, apart from the way
"Many times, the unit called degree is used. 1 degree” is written
with the symbol “1 °”
This angle can be represented in
symbols, as an "AOB" angle.
Or also for a letter. Angle "X"
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Mathematics/ Fourth Grade
D. How to measure an angle:
1. Place and hold protractor with center at
vertex O of angle.
2. Rotate the 0 ° mark to the OB side of the
angle.
3. Locate on the conveyor the graduation
through which the other side passes, OA.
That number is the measure of the AOB
angle.
E. Measure the angle of the brackets with the protractor
F. Let's look at the following drawings.
What are the differences between the groups?
Like the angles in GROUP 1, an angle that measures less than the right
angle (90 °) is called the acute angle.
Like GROUP 2 angles, an angle that measures more than the right angle
(90 °), and less than the flat angle (180 °), is called the obtuse angle.
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Mathematics/ Fourth Grade
G. Answer what each angle is called.
H. Read and construct the following angles and say the name of each
one.
(1) 70 ° (2) 180 ° (3) 90 ° (4) 160 °
I. Let's compare the (opposite) angles "a" and "b"
1. Find the angles "a" and "b".
2. Find the angles "a" and "b" by calculating.
✓ Both angles "a" and "b" can be found. subtracting 50 ° from 180 °
✓ Angle "a" and "b" measure 130 °.
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Mathematics/ Fourth Grade
J. Find the measure of the angles "a", "b", "c", "d", "e", "f", "g", "h", "i"
Supplementary exercises
1. Say the name of each angle
Angle "a" and angle "b" are opposite angles for the vertex.
Consecutive angles whose uncommon sides are in a straight line,
such as the angle "a" and the angle measuring 50 °, are called
adjacent angles.
The sum of the adjacent angles is 180 °
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Mathematics/ Fourth Grade
2. Measure angles "a" and "b".
3. Find the angles "a", "b", "c".
4. Construct angles that measure 72 °, 110 °, 165 °, and 260 °.
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Mathematics/ Fourth Grade
We had fun.
The fish are saying something. To find out, you have to order the letters of
each bubble.
We are going to measure the angles of the mouths and order them from
least to greatest.
What do the fish say?
Its time to start
12
Mathematics/ Fourth Grade
UNIT 3
MULTIPLICATION
Objective: Calculate using the vertical calculation mechanism in the case
of UMCDU by U
Let's remember:
Lesson 1: Multiply by U
A. There is a ship that carries 1,321 people
on each trip.
How many people can you take on two
trips?
1. Write the approach of the operation.
✓ PO: 1321 x 2
✓ Let's think about the form of the vertical calculation with the
number cards.
1. Calculate 324x 2 325 x 3 239 x 6 748 x 7
2. 2x3 and 3x2 are equal because they
are both 6. Does it always matter
when the order of the two factors is
changed in multiplication? Why?
13
Mathematics/ Fourth Grade
The multiplication of 1321 x 2 is calculated like this (as in the DU x U and CDU x
U cases): Place the two numbers so that the digits of the same place value
are in a vertical line.
1. Calculate the units: 4x2 = 8 and write 8 in the units.
In this case, it is recommended to calculate 2x4 to use a single
multiplication table.
2. Calculate the tens: 2x2 = 4 and write the 4 in the tens.
3. Calculate the hundreds: 2x3 = 6 and write the 6 in the hundreds.
4. Calculate the thousand units: 2x1 = 2 and write the 2 in the thousand
units.
Lets think about the form of the vertical calculation with the number
cards.
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Mathematics/ Fourth Grade
1. Calculate:
2. Calculate:
3. Calculate:
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Mathematics/ Fourth Grade
Lesson 2: Multiply by D0 AND C00
Objective: Know that if it is multiplied by 10 (or by 100), 0 (00) is added to
the multiplying.
A. Apples are sold in a bag. There are 3 apples in each bag. If there are
10 bags, how many apples are there in total?
✓ PO: 3X10
We will find the answer by consulting the following drawing.
B. Rules are sold for 23 lempiras each. If 10 rules are bought. How many
lempiras do you need?
✓ PO: 23X10
We will find the answer using the number cards.
If multiplied by 1, the numbers of the multiplicand change value
and move one position to the left, that is, the product obtained
by adding 0 to the right side of the multiplicand.
10 apples
10 apples
10 apples
30 apples
Apples
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Mathematics/ Fourth Grade
1. Calculate:
2. Calculate:
3. Calculate:
4. Calculate:
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Mathematics/ Fourth Grade
Lesson 3: Multiply by DU
Objective: Calculate DU x DU in the vertical form
A. Erasers are sold at 13 lempiras each.
A box contains 20 erasers.
Professor Rubén Darío bought a box and a draft for his 21 students.
How much does the teacher pay?
✓ PO: 13x21
We will find the answer by consulting the drawing.
✓ The price of those in the box 13x20 = 260
✓ The price that is outside the box 13x 1 = 13
A: 273 lempiras Total 273
B. We are going to calculate 13x21 in the vertical form
1. Calculate.
2. Calculate vertically.
calculated Is calculated
Add
Vertical calculation of 13 X 21
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Mathematics/ Fourth Grade
3. Calculate vertically.
4. Calculate.
5. Calculate.
C. Let's compare the two calculations.
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Mathematics/ Fourth Grade
Calculate as above
Write 0 in the units and start calculating 34x2 to your left.
6. Find in form (b) if you can. If you have difficulty do it in (a)
Lesson 4: Multiply by CDU
Objective: Calculate CDU x CDU in the vertical form.
A. Shirts are sold at 112 lempiras each with tax
included.
If each of the 231 students at the school
buys a shirt,
How many lempiras are paid in total?
✓ PO: 112x321
✓ Let's think about how to calculate in vertical form.
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Mathematics/ Fourth Grade
1. Calculate vertically.
2. Calculate (If you can't calculate by omitting multiplication by zero,
write it down)
Exercises
Objective: Confirm what they have learned by solving the exercises.
1. Solve the following problems.
✓ There is a vehicle that consumes 19
liters of gasoline per month.
How many liters of gasoline do you
consume in a year?
✓ Shirts of various prices are sold. there
are 72 of 243 lempiras, 47 of 195 lempiras and 65 of 160
lempiras.
How much will the total of the sale be?
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Mathematics/ Fourth Grade
2. Find the right numbers for the boxes
Workbook 1 - Mathematics
Fourth grade of Basic Education
Printed and published by the Secretary of Education
In the framework of the national emergency COVID-19
Tegucigalpa, MDC, Honduras, CA
2020
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