The document discusses objectives related to performing addition and subtraction of integers. The first objective is for learners to perform addition of integers. The second objective is for learners to solve routine and non-routine problems involving addition of integers. Examples of adding and subtracting integers are provided.
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Performing Addition of Integers in Math 6
3. Objectives:
*The learner performs addition of
integers.
*The learner solves routine and
non-routine problems involving
addition of integers
4. WHY WE COOK THE FOOD WE EAT
We cook our food for three reasons-to make food look more appetizing,
to soften hard and tough foods and to kill any microbe that may happen to
be in the food.
There are many ways of preparing food. Food can be fried, boiled,
broiled, roasted, baked, steamed, stewed or sauteed. They can be well-
cooked or half-cooked.
It is easier to digest food that is well-cooked. But there are foods that are
easier to digest when half-cooked than when well-cooked. Meat and liver
for example, are easier to digest when half-cooked. But certainly, they taste
better when well-cooked.
Many vegetables are also easier to digest when well-cooked, but some
are eaten raw. Lettuce is an example of a vegetable which is eaten raw.
5. REVIEW:
Compare the following integers by
writing the symbol > or on the line.
1.+13 _____ +8
2.-6 _____ -2
3.+7 _____ -15
4.-1 _____ +9
5.+4 _____ - 4
6. PROBLEM OPENER
Mrs. Reyes bought fruits that cost P 700.00 from
a wholesaler and sold them in her fruits stand.
On Monday, her sales are P800.00 and on
Tuesday, P500.00. But on Wednesday, she loses
P400.00 because some of the fruits are already
rotten. Considering the sales of fruits for the
three days, did Mrs. Reyes gain or lose profit?
7. Considering the sales of Mrs. Reyes on three
days, represent the gain and loss using
integers. To determine the total sales means to
combine the gains and loss.
?How are we going to combine the gain and
loss?
?What is the total sale of fruits of Mrs. Reyes?
?How can we determine if Mrs. Reyes gained or
lost money from selling her fruits?
8. Determine how to combine integers
by studying the given examples
below:
1.( +4 ) + ( +3)= ( +7)
2.(-4) + ( -3)= ( -7)
9. To add integers having the same sign, add the integers then affix
the common sign.
To add integers having different sign, subtract then affix the sign
of the bigger number.
Examples:
1. 5 + 8 = 13
2. (-12) + (-15) = (-27)
3. 56 + (-12) = 44
4. (-63) + 49 = (-14)
5. (-47) + (-35) = (-82)
11. SEAT WORK
Use the 4-Step Plan in solving the
problem.
Mt. Everest, the highest elevation in
Asia, is 29 029 feet above sea level.
The dead sea, the lowest elevation, is
1 412 feet below sea level. What is the
sum of these two elevations?
12. Nuggets of Thought
How do we add integers with the
same signs?
How do we add integers with
different signs?
14. ASSIGNMENT
Solve the problem.
1.Kris gets on the elevator on the
eleventh floor. The elevator goes
down two floors and stops. It then
continues to go down four more floors
where Kris got off. In what floor did she
get off the elevator?
17. WHY WE COOK THE FOOD WE EAT
We cook our food for three reasons-to make food look more appetizing,
to soften hard and tough foods and to kill any microbe that may happen to
be in the food.
There are many ways of preparing food. Food can be fried, boiled,
broiled, roasted, baked, steamed, stewed or sauteed. They can be well-
cooked or half-cooked.
It is easier to digest food that is well-cooked. But there are foods that are
easier to digest when half-cooked than when well-cooked. Meat and liver
for example, are easier to digest when half-cooked. But certainly, they taste
better when well-cooked.
Many vegetables are also easier to digest when well-cooked, but some
are eaten raw. Lettuce is an example of a vegetable which is eaten raw.
18. Add the following integers.
1. 56 + (-12)
2. (-63) +49
3. 42 + (-24)
4. (-91) + 77
5. 12 + (-26)
KING BACK
L
19. The temperature in Baguio City
was 12 ?Celsius in the morning. It
dropped to 8?Celsius in the
evening. What is the difference
between these temperatures?
PROBLEM OPENER
20. To get the difference between the two
temperatures, we need to subtract
8?Celsius from 12?Celsius.
What is the equation representing this
situation?
21. Subtracting Integers is adding the
opposite of the subtrahend to the
minuend.
12? - 8? = N
minuend subtrahend
22. When subtracting integers, change the
subtraction sign to addition sign. Simply
change the sign of the subtrahend and
proceed to addition of integers.
12? - 8? = N
12? + (-8?) = 4?
32. WHY WE COOK THE FOOD WE EAT
We cook our food for three reasons-to make food look more appetizing,
to soften hard and tough foods and to kill any microbe that may happen to
be in the food.
There are many ways of preparing food. Food can be fried, boiled,
broiled, roasted, baked, steamed, stewed or sauteed. They can be well-
cooked or half-cooked.
It is easier to digest food that is well-cooked. But there are foods that are
easier to digest when half-cooked than when well-cooked. Meat and liver
for example, are easier to digest when half-cooked. But certainly, they taste
better when well-cooked.
Many vegetables are also easier to digest when well-cooked, but some
are eaten raw. Lettuce is an example of a vegetable which is eaten raw.
33. Give the opposite of each given
integer.
1.) +15
2.) -9
3.) -34
4.) +28
5.) -95
KING BACK
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34. John and Carl participated in a
race. John ran a distance of 6 km.
Carl ran a distance of 5 km. What
was the difference in the distance
they ran in the race?
PROBLEM OPENER
35. 1. Who participated in a race?
2. How many kilometers did John run?
3. How many kilometers did Carl run?
4. Write the expression to get the
difference between the distance
both participants ran.
QUESTIONS:
36. What change in temperature
does a worker experience in a
grocery when he goes from the
vegetable section at 4?C to the
meat section with a temperature
of -18?C?
PROBLEM #2
38. Subtracting Integers is adding the opposite of the
subtrahend to the minuend.
Examples:
1. (-23) ¨C (-19)=
2. 63 ¨C (-47)=
3. 51- (-72)=
4. (-60) ¨C 46=
5. (-52) ¨C (-88) =
39. Solve the problem.
In a condominium in Valenzuela
City, the elevator on the 3rd floor
goes up to 6 floors then goes down
4 floors. At what floor did the
elevator stop?
PAIR-SHARE
40. SEAT WORK
Solve the problem.
1. One day, the temperature in Manila is
34?C while in Baguio it is 19?C. What is the
difference between the two temperatures?
2. A shark was seen at 2546 feet below
sea level. It ascends 365 feet. What is its
new position?
41. SEAT WORK
3. Nicole has P390, she wants to
buy a Rubik's cube which cost
P550. How much more money
does she need to buy the Rubik's
cube?
43. assessment
Solve each problem.
1. RJ was able to save P895.00 from
his weekly allowance. If he wants to
buy a second-hand mobile phone
for P1050.00, how much more money
does he still need?
44. 2. Thea invested P15,000.00. in
buying and selling items. After
month. She was able to sell the
items for a total amount of P18,
350.00. How much did she gain?
45. 3. During summer, Jake weighed
65 kg. When he came back to
school, he realized that he lost 3
kg. He lost another 2 kg in
December. What was his weight
in December?
46. assignment
Solve the problem.
1. A commercial aircraft is flying 32500 feet
above sea level while a submarine is 29360
feet below sea level. How many feet is their
distance from one another?
49. WHY WE COOK THE FOOD WE EAT
We cook our food for three reasons-to make food look more appetizing,
to soften hard and tough foods and to kill any microbe that may happen to
be in the food.
There are many ways of preparing food. Food can be fried, boiled,
broiled, roasted, baked, steamed, stewed or sauteed. They can be well-
cooked or half-cooked.
It is easier to digest food that is well-cooked. But there are foods that are
easier to digest when half-cooked than when well-cooked. Meat and liver
for example, are easier to digest when half-cooked. But certainly, they taste
better when well-cooked.
Many vegetables are also easier to digest when well-cooked, but some
are eaten raw. Lettuce is an example of a vegetable which is eaten raw.
51. Determine if the following pairs of
integers have like signs or unlike signs.
1.(+7) and (-12)
2.(-4) and ( -9)
3.(-5) and (-30)
4.(+2) and (-11)
5. (+56) and (+18)
KING BACK
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52. After a community campaign on reducing
waste, the amount of garbage in Rita¡¯s
household decreased by 2 kg per day. By
how much will their garbage decrease after 6
days? What is the average reduced waste by
each person in Rita¡¯s household if there are
four of them in the family?
PROBLEM OPENER
53. What integer will represent
the decrease in garbage in a
day?
QUESTION:
54. The product of two integers with the same
signs is positive while the product of two
integers with different signs is negative.
Examples:
1. 7 x 5 =35
2. -11 x (-6)= 66
3. 9 x (-7) = -63
4. 7 x (-21) = -147
5. 25 x 25 = 625
55. The quotient of two integers with the same
signs is positive and the quotient of two
integers with different signs is negative.
Examples:
1. 6 ¡Â 2 = 3
2. (-15) ¡Â (-3) = 5
3. 45 ¡Â (-9) = -5
4. (-100) ¡Â 25 = -4
5. 24 ¡Â (-6) = -4
56. Find the product.
1.(-8) x (-2)
2.(+3) x (-4)
3.(-5) x (+9)
Find the quotient.
1.(-25) ¡Â (+5)
2.(+21) ¡Â (-3)
3.( -18) ¡Â (+ 6)
PAIR-SHARE
57. SEAT WORK
Use the 4-step plan to solve the problem.
Mrs. Tan supports a charity for the
children by deducting P350.00 every
month from her bank account. What is
her total deduction in a year? How much
money will the charity receive in 5 years?
58. Nuggets of thought
How do we multiply and divide
integers with the same signs?
How do we multiply and divide
integers with different signs?
59. assessment
Perform the indicated operation.
1.(-12) x (+15) 6. (+ 144) ¡Â (- 8)
2.(-4) x (-13) 7. (- 72) ¡Â (+ 18)
3.(+9) x (+ 13) 8. (-350) ¡Â (-7)
4.(-14) x (+2) 9. (+ 120) ¡Â (+ 5)
5.(+24) x (-3) 10. (-81) ¡Â (+3)
60. assignment
Solve the problem.
A. Find the product.
1.6 x 7
2.(-230 x 0 x 43
3.17 x (-13)
4.9 x (-8) x ( -3)
5. 17 x (- 18) x 0 x (-19)
B. Find the quotient.
1. (-54) ¡Â (-6)
2. 64 ¡Â (-8)
3. (-96) ¡Â 8
4. 85 ¡Â (-5)
5. (-72) ¡Â (-3)