2. INTRODUCTION
For more than two thousand years, mathematics has been a part of
the human search for understanding. Mathematical discoveries have
come both from the attempt to describe the natural world and from
the desire to arrive at a form of inescapable truth from careful
reasoning. These remain fruitful and important motivations for
mathematical thinking, but in the last century mathematics has been
successfully applied to many other aspects of the human world: voting
trends in politics, the dating of ancient artifacts, the analysis of
automobile traffic patterns, and long-term strategies for the
sustainable harvest of deciduous forests, to mention a few. Today,
mathematics as a mode of thought and expression is more valuable
than ever before. Learning to think in mathematical terms is an
essential part of becoming a liberally educated person.
3. MATHEMATICS IN DAILY LIFE
• Maths is all around us, it is everywhere we go.
• Not only does maths underline every process
and pattern that occurs in the world around
us, but also, a good understanding of it will
help enormously in our daily life.
• Being fast in mental arithmetic can save your
money when you go to market.
4. UNIT RATES IN EVERYDAY LIFE
• We sometimes will be at the grocery store and will be
staring at two different items wondering which one is
the best deal.
• Discount :-
Offers during festival seasons.
If you buy many, get one free/two free.
If you buy for more amount, more discount.
• If so, a UNIT RATE could help out when this happens
and make your purchasing decision an easy one.
• Now we will know what are UNIT RATES are and how
to apply them in everyday comparison situations.
5. UNIT RATES
• To find the Unit Rate, you would find the cost or
amount for 1. Or the rate when the denominator
is 1.
“How much for just 1?”
• If it costs Rs.78 for 13 sandwiches, What is the
unit rate?
Rs.78 ÷ 13 = 𝑅𝑠. 6 𝑒𝑎𝑐ℎ
6. AT THE GROCERY STORE
• SITUATION 1 :
WHICH IS THE BEST BUY.??
SMALLER SIZE !!
THE SOLAS OLIVE OIL: EXTRA VIRGIN
RS.170/250ML
LARGER SIZE !!
THE SOLAS OLIVE OIL: PURE
RS.275/500ML
amount = 170
quantity 0.25ml
170 = x
0.25 1
170(1)= 0.25x
x= 170/0.25
x= 680
amount = 275
Quantity 0.5ml
275 = x
0.5 1
275(1)= 0.5x
x= 275/0.5
x= 540
This olive oil pure will be the best buy..!
7. SITUATION 2:
SMALLER SIZE..!!
HAZELNUT CASHEW POUCH
RS.255/ 100GM
255= amount = x
100 Quantity 1
255(1)=100x
x=255/100
x= 2.55
LARGER SIZE..!!
HAZELNUT CASHEW POUCH
RS.659/ 500GM
659 = amount = x
500 quantity 1
659(1)= 500x
x= 659/500
x= 1.318
This larger sized cashew pouch is the
best buy..!!!
8. SITUATION 3
BUY 1 GET 1 FREE
OLIVE OIL- EXTRA VIRGIN
RS.1250/1000ML
Amount = 1250 = x
Quantity 1000ml 1
1250(1)= 1000x
x= 1250/1000
x= 1.25
OLIVE OIL- EXTRA LIGHT
RS.1149/2LITRE (2000ML)
Amount = 1149 = x
Quantity 2000 1
1149(1)= 2000x
x= 1149/2000
x=0.57
The olive oil – extra light is the best buy..!!
9. SITUATION 4:
AASHIRWAD
ATTA- CHAKKI FRESH
RS.309/10KG
Amount = 309 = x
quantity 10 1
309(1)=10x
x= 309/10
x=30.9
This pack will be the best deal..!!
AASHIRWAD
ATTA – CHAKKI FRESH
RS.165/5KG
Amount = 165 = x
Quantity 5 1
165(1)= 5x
x=165/5
x=33
10. CONCLUSION
• We have compared the sizes of oils , dry fruits
and wheat packs using ratios and unit rates.
• Most of the time the larger size is the better
deal , you pay more and get a lot more.
• In real life when shopping for groceries unit
rates help a lot.
