DMD   EDU-HOME

WELCOME TO THIS PAGE INTENDED FOR STUDENTS AT THE UNIVERSITY OF THE WESTERN CAPE REGISTERED IN 2010  FOR THE MODULE:

QSF  132

T1 W3 L2

DECIMAL NUMBER SYSTEM : 1 ;  CR : p.71

WHOLE NUMBERS / INTEGERS : 2  4,  9 : pp. 81-82

COMMON FRACTIONS :  5  8: pp.49- 54; pp. 93  100 ; pp. 149 - 155

DECIMAL FRACTIONS :  10 -12 : pp. 100 - 102

PERCENTAGES : 13, 15  16 : pp. 102  106 ;  pp. 164 - 166

POWERS : 14 : pp. 131 - 133

ALGEBRA : 17  20 : p.83; pp.110  133; pp. 155 - 163

Elasticity of Demand =

KEY BUSINESS CONCEPTS/TERMS:  DEMAND, QUANTITY, PRICE

KEY MATHEMATICAL CONCEPTS/TERMS:  EQUATION/FORMULA, NUMBERS, FRACTIONS, DECIMAL FRACTIONS, PERCENTAGE, VARIABLES (ALGEBRA), GRAPHS

NUMBERS -----DECIMAL NUMBERS             ALGEBRA  ----   VARIABLES

EXPRESSIONS ----  EQUATIONS

FORMULAE

FRACTIONS ----DECIMAL FRACTIONS         GRAPHS

PERCENTAGES

FIGURE:  DIAGRAMMATICAL REPRESENTION SHOWING RELATIONSHIPS BETWEEN BASISC MATHEMATICAL CONCEPTS/TERMS RELEVANT TO ABOVE ELASTICITY FORMULA

CALCULATOR SKILLS !!!!!!!!!!!! PROBLEM 5.8 and 5.9

1. PROBLEM FORMULATING SKILLS (TASK 1)

IN GENERAL, it is harder to formulate a problem, than to solve it.

N.B. This of course depends on the level of the problem.

Eg.  SOLVE without calculator:

(a)      19386356 Χ 10983829

or      (b)      If three men can dig five graves in 2 days, how long will seven men take to dig 50 graves?

5. The word more is often confused. What is the difference between the two statements:

(a) There are b boys and c more girls than boys; and

(b) There are b boys and c girls, where the girls are more than the boys.

6. (a) What is wrong with the following proof of the statement: If n is even, then (-1) =1.

Proof:   (-1) = 1, and 4 is even, therefore (-1) =1.

7. State whether the following is true or false:

(a)         60% of 90 = 90% of 60

(b)     of y expressed as a fraction of (a+b) =   of x expressed as a fraction             of (b+a).

8.  Refer Section 2.4.1 on p. 77 dealing with sets.  Draw a large, clear diagram, picture or any representation which represents the problem. (DO NOT SOLVE!!)

©  DESMOND DESAI, DMD EDU-HOME, 2010

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