Class 7 Exam > Class 7 Videos > Examples: Multiplication of Integers
Examples: Multiplication of Integers Video Lecture - Class 7
FAQs on Examples: Multiplication of Integers Video Lecture - Class 7
| 1. What is multiplication of integers? |  |
Ans. Multiplication of integers is a mathematical operation that involves combining two or more integers to find their product. It is represented by the symbol "x" or "*", and the result of the multiplication is also an integer.
| 2. How do you multiply positive and negative integers? | |
Ans. When multiplying positive and negative integers, the resulting product will always be negative. The absolute values of the integers are multiplied, and the negative sign is attached to the result.
| 3. Can you give an example of multiplying two negative integers? | |
Ans. Certainly! Let's consider the multiplication of -3 and -4. When we multiply -3 and -4, the result is 12. So, (-3) x (-4) = 12.
| 4. What happens when you multiply zero by any integer? | |
Ans. When you multiply zero by any integer, the result is always zero. This is because zero acts as a "neutral" element in multiplication, and anything multiplied by zero becomes zero.
| 5. Is the order of multiplying integers important? | |
Ans. No, the order of multiplying integers does not affect the result. This is known as the commutative property of multiplication. For example, multiplying 3 by 5 gives the same result as multiplying 5 by 3, which is 15 in both cases.
Text Transcript from Video
hello friends this video on integers
part 12 is brought to you by exam for
calm no more fear from exam based on
whatever we have learned so far on
multiplication of integers let us
quickly look at some of the questions
question number 1 what will be the sign
of the product if we multiply together
eight negative integers and three
positive integers okay so how many
number of negative integers do we have
so number of negative integers number of
negative integers is eight and eight is
even number or odd number it is even
number even number any number that is
divisible by two so when you divide that
number by two they remain then is zero
so eight is an even number therefore the
result would be the sign of the product
would be positive yes and in the first
case you also have three positive
integers now number of positive integers
is three right so for positive integers
anyways the product will be positive
therefore overall the sign of the
product will be positive let's look at
the next one you have number of negative
integers eight five so you have number
of negative integers five five is even
or odd fibers odd therefore the product
of five negative integers would be so
therefore the product of five negative
integers would be negative
now what about four positive integers
soon a number of positive integers is
four and anyways doesn't matter whether
the number of positive integer is three
or four that product is on this positive
so now one so the product half part of
the product would be negative and the
remaining part of the product would be
positive so overall the product would be
negative question number two find the
product minus nine x my
spine x -6 x -3 so here how many
negative integers do you have so you
have 4 negative integers therefore the
sign of the final product would be
positive right so all we need to do is
just need to multiply them so 9 into 5
is 45 and 6 into 3 is 18 so this is
equal to 810 question number 3 find the
product 12 x minus 50 x minus 6 so in
this case how many negative integers do
you have you have two negative integers
therefore the product again would be
positive in this case so 12 x 50 into 6
is 300 and this is equal to 3600 so this
is the product thank you please visit
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part 12 is brought to you by exam for
calm no more fear from exam based on
whatever we have learned so far on
multiplication of integers let us
quickly look at some of the questions
question number 1 what will be the sign
of the product if we multiply together
eight negative integers and three
positive integers okay so how many
number of negative integers do we have
so number of negative integers number of
negative integers is eight and eight is
even number or odd number it is even
number even number any number that is
divisible by two so when you divide that
number by two they remain then is zero
so eight is an even number therefore the
result would be the sign of the product
would be positive yes and in the first
case you also have three positive
integers now number of positive integers
is three right so for positive integers
anyways the product will be positive
therefore overall the sign of the
product will be positive let's look at
the next one you have number of negative
integers eight five so you have number
of negative integers five five is even
or odd fibers odd therefore the product
of five negative integers would be so
therefore the product of five negative
integers would be negative
now what about four positive integers
soon a number of positive integers is
four and anyways doesn't matter whether
the number of positive integer is three
or four that product is on this positive
so now one so the product half part of
the product would be negative and the
remaining part of the product would be
positive so overall the product would be
negative question number two find the
product minus nine x my
spine x -6 x -3 so here how many
negative integers do you have so you
have 4 negative integers therefore the
sign of the final product would be
positive right so all we need to do is
just need to multiply them so 9 into 5
is 45 and 6 into 3 is 18 so this is
equal to 810 question number 3 find the
product 12 x minus 50 x minus 6 so in
this case how many negative integers do
you have you have two negative integers
therefore the product again would be
positive in this case so 12 x 50 into 6
is 300 and this is equal to 3600 so this
is the product thank you please visit
exam fee or come for free quality
education you can learn with a simple
four-step learning process wherein you
can watch video lessons you can ask your
questions you can refer notes and you
can take a free online test we have
content for class 6 to 12 on physics
chemistry mathematics and biology along
with practical videos so please
subscribe to our channel for daily
updates thank you
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Nov 24, 2024 Last updated |
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