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mathematicsprinted 14 · PDF 15
165 pagesrevision 46935
printed 14 · PDF 15
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14
nearest to cm. Find the upper and lower bound of both
measurements.
Solution:
*First we would find the error
½= 0.5 cm Error = 0.5 cm
*Now apply above formula of upper and lower bound.
Upper Bound = 10 + 0.5 = 6 + 0.5
= 10.5 cm = 6.5 cm
Lower Bound = 10 - 0.5 = 6 - 0.5
= 9.5 cm = 5.5 cm
Rules of using upper and lower bound in multiplication or division:
Multiplying two numbers together: T =a × b
The upper bound of T can be found by multiplying together the upper bound of
a and the upper bound of b.
The lower bound of T can be found by multiplying together the lower bound of a
and the lower bound of b.
Dividing a number by another number: T =a ÷ b
The upper bound of T can be found by using the upper bound of a
and dividing it by the lower bound of b
The lower bound of T can be found by using the lower bound of a
and dividing it by the upper bound of b