math unit11 units of measurement
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Unit 11Units of Measurements
Presentation 1 Units and Measuring
Presentation 2 Upper and Lowers Bounds
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Unit 11Units of Measurements
Units and Measuring
![Page 3: Math unit11 units of measurement](https://reader035.vdocuments.site/reader035/viewer/2022062412/587bdabb1a28ab834d8b629b/html5/thumbnails/3.jpg)
Different units can be used to measure the same quantities. It is important to use appropriate units. Some important units are listed below.
1 km1 m1 m1 cm1 tonne1 kg1 litre1m3
1cm3
=========
100010010001010001000100010001
m cm mm mm kg g ml litresml
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What would be the best units to use when measuring the following:
a)The distance between Negril and Kingston
b)The width of a watch face
c)The mass of a person
d)The mass of a letter
e)The mass of a truck
f)The volume of medicine in a spoon
g)The volume of water in a swimming pool
km
cm or mm
kg
g
tonnes
ml
m3
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Length in m Length in cm Length in mm
4
311
1500
8∙62
400 4000
31103∙11
1∙5 150
8620862
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Unit 11Units of Measurements
You have finished viewing:
Units and Measuring
Return to front slide
Presentation 1 Units and Measuring
Presentation 2 Upper and Lower Bounds
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Unit 11Units of Measurements
Upper and Lower Bounds
![Page 8: Math unit11 units of measurement](https://reader035.vdocuments.site/reader035/viewer/2022062412/587bdabb1a28ab834d8b629b/html5/thumbnails/8.jpg)
Measurements are not exactIf the length of a line is given as 11mm, then its length, in mm, lies between:
Note that the lower bound is less than or equal to the length whereas the upper bound is strictly greater than the length
10∙5 ≤ length < 11∙5
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ExampleA line is measured as 12∙7cmState the range of values within which its real length, in cm, must lie.
Solution
12∙65 ≤ 12∙7 < 12∙75
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A B
Area = cm2 Area = cm210 12
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CD
Area = cm2 Area ≈ cm212∙5 14∙5
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E
Area ≈ cm222
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Unit 11Units of Measurements
You have finished viewing:
Upper and Lower Bounds
Return to front slide
Presentation 1 Units and Measuring
Presentation 2 Upper and Lower Bounds