MATHEMATICAL LITERACY GRADE 10 Assignment 1 MEMO

MATHEMATICAL LITERACY GRADE 10

Assignment 1 MEMO

2020

SCHOOL BASED ASSESSMENT TASK

TOPIC: Basic Skills

MARKS: 50

WEIGHTED MARK: 10

SYMBOL M MA MCA CA A C S RT/RG SF O P R NPR AO

EXPLANATION Method Method with accuracy Method with consistent accuracy Consistent accuracy Accuracy Conversion Simplification Reading from a table/graph/diagram Correct substitution in a formula Opinion/Example/Definition/Explanation Penalty, e.g. for no units/incorrect rounding off, etc. Rounding off No penalty rounding or omitting units Answer only, if correct, full marks

QUESTION 1 SOLUTION

1.1

A fee that is charged for using a particular service.

1.2

R42,42 x 115%

= R48,78

Mark

2 O

(2)

1 Correct % 1 M% 1 CA

OR

VAT R42,42 x 15 100

= R6,36

Inclusive : R42,42 + R6,36

= R48,78

1.3

40 to 50

1.4

6 x R8,28 = R49,68

4 x R8,79 = R35,16 5 x R15,00 = R45,00 5 x R21, 83 = R96,05 7,4 x R29,98 = R221,85

(3)

2RT

(2)

1 MA rate

1 CA answer

1M

1M

1M

1M

Total amount =R49,68 + R 35,16 + R45,00 + 6,05+R221,85 1M adding

=R447,74

1CA

(8)

1.5

Accept one of the following applicable reasons

2 O

Close taps while brushing teeth/washing hands

Rather take a shower than bath

Fix leakages

Do not fill the swimming pool

Use grey water(bath or washing machine) in the

garden

Or to flush the toilet

Reduce the capacity of the flush tank

Use buckets to wash the car

(2)

Install a tank

1.6

2:4

1 A ratio

therefore 6 parts

1 A total parts

Tumi's family :4 x R628,46

1 M

6

= R418,97

1 CA

(4)

1.7

Total hours

5h20 + 2h15 = 7h35

1 CA

= 8 hours

1 R

8 hrs x R159,90 = R1279,20

1 M

1 CA

(4)

QUESTION 2

2.1 A = R3 108 B = R55,40 C = R4 504,20

2.2 Rental Or Wages

2.3 Total expense = R165,80+R256,10+R356,20+R521,80 =R1 299,90

Working days = 4 ? 6 = 24 Average expense/day = total expense

24 = R1299,90

24 = R54,16

2.4 R6828,20 ? R4710,40 = R 2117,80

2.5 521,80 x 100

6828,20

=7,64%

2.6 Income = profit + expense

= R5 486 + R4 560

= R10 046

2.7 Profit margin = income expenses ? 100% expenses

= R10046 R5486 ? 100% R5486

= 83,1206....%

83,12%

OR

R4560 ? 100% R5486

= 83,1206.. ..%

83,12%

2 A 2 A 2 A

(6)

2 RT (2)

A1:correct total for telephone Cost C1: converting 4 weeks to

working days

M1: dividing telephone cost by period

CA1: follow up answer correct

(4)

1 A correct values

1 MA

(2)

1 A correct valves

1 M % calculation

1 CA 2 dec. places

(3)

F 1: Knowledge to add

SF2: correct values used

A 1:Accurate answer

(4)

SF 2: substituted answer in 2.3 and correct expense

Amount

CA1: % calculated (Follow up from answer in 2.3) R1: rounding correctly (follow up)

(4)

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