Math Module IV
Juan Armando Pérez
Vital A01400839
Multicultural
Rational Numbers
Quotients of integrers Is
the greatest common
factor of numerator and the
denominator 1.
Fundamental property of rational
numbers a/b * k/k = a/b*
36/54 = 2/3*18/18=2/3*
Cross-Product test
a/b=c/d if a*d=b*c
36/54=2/3
36*3=108
54*2=108
108=108
Operations with rational numbers
To realize the operation of
addition the two fractions must
be redrawn in a unit taht both
have in common, then add
numerator with numerator and
the same with denominator,
then the fraction simplifies
1/3+2/5=
5/15+6/15=
11/15
Addition and Simplifying of fractions
Multiplying of fractions
Multiply the nominator
with th other and teh
same with denominator
1/2*2/5= 2/10
Because 2 and 10 are
multiples of themselves
they can be simplified by
the same number taht is
2
2/10= 1/5
Division of fractions
To divide the fractions invert
the divisor and then multiply