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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