PPT: Comparing Quantities | Mathematics (Maths) Class 7 (Old NCERT) PDF Download

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C o m p a r i n g
Q u a n t i t i e s
Class 7- Mathematics
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C o m p a r i n g
Q u a n t i t i e s
Class 7- Mathematics
I n t ro d uc ti o n
Imagine you and friend Sid got your
report cards, and you scored 320 out of
400 whereas Sid scored 300 out of
360. 
You immediately say that, you have
scored better than Sid, because 320 >
300. But, is that right? 
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C o m p a r i n g
Q u a n t i t i e s
Class 7- Mathematics
I n t ro d uc ti o n
Imagine you and friend Sid got your
report cards, and you scored 320 out of
400 whereas Sid scored 300 out of
360. 
You immediately say that, you have
scored better than Sid, because 320 >
300. But, is that right? 
Report cards also have percentages
written on them, and it shows that
your percentage was 80% but Sid's
percentage was 83.3%. 
So, this shows that, instead Sid has
scored better.
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1 1
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2 2
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C o m p a r i n g
Q u a n t i t i e s
Class 7- Mathematics
I n t ro d uc ti o n
Imagine you and friend Sid got your
report cards, and you scored 320 out of
400 whereas Sid scored 300 out of
360. 
You immediately say that, you have
scored better than Sid, because 320 >
300. But, is that right? 
Report cards also have percentages
written on them, and it shows that
your percentage was 80% but Sid's
percentage was 83.3%. 
So, this shows that, instead Sid has
scored better.
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P e r c e n t a g e s
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1 1
4 4
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C o m p a r i n g
Q u a n t i t i e s
Class 7- Mathematics
I n t ro d uc ti o n
Imagine you and friend Sid got your
report cards, and you scored 320 out of
400 whereas Sid scored 300 out of
360. 
You immediately say that, you have
scored better than Sid, because 320 >
300. But, is that right? 
Report cards also have percentages
written on them, and it shows that
your percentage was 80% but Sid's
percentage was 83.3%. 
So, this shows that, instead Sid has
scored better.
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P e r c e n t a g e s
Percentages are numerators of fractions with the
denominator 100.
Percentage is a method used to compare quantities.
Percent is represented by the symbol - %.
What are percentages?
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