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
2O
(2)
1 Correct %
1 M%
1 CA
OR
VAT R42,42 x 15
100 ?
= R6,36 ?
1.3
1.4
Inclusive : R42,42 + R6,36
= R48,78 ?
40 to 50 ??
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
1.6
Accept one of the following applicable reasons
? 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
? Install a tank
2:4
?
therefore 6 parts ?
Tumi¡¯s family :4 ?x R628,46
6
= R418,97 ?
2 O
(2)
1 A ratio
1 A total parts
1M
1 CA
(4)
1.7
Total hours
5h20 + 2h15 = 7h35 ?
= 8 hours ?
1 CA
1R
8 hrs x R159,90??
= R1279,20 ?
1M
1 CA
(4)
QUESTION 2
2.1
A = R3 108 ??
B = R55,40 ??
C = R4 504,20 ??
2A
2A
2A
(6)
2.2
Rental ?? Or Wages ??
2 RT
2.3
Total expense = R165,80+R256,10+R356,20+R521,80
=R1 299,90 ?
Working days = 4 ¡Á 6 = 24?
total expense
Average expense/day =
24
R1299,90
=
?
24
= R54,16 ?
A1:correct total for telephone
Cost
C1: converting 4 weeks to
working days
(2)
2.4
R6828,20 ¨C R4710,40 ?
= R 2117,80 ?
2.5
521,80 ?x 100 ?
6828,20
=7,64% ?
Income = profit + expense ?
= R5 486 + R4 560 ??
= R10 046 ?
income ? expenses
Profit margin =
¡Á 100%
expenses
?
?
R10046 ? R5486
=
¡Á 100%
R5486
= 83,1206....% ?
¡Ö 83,12% ?
OR
R 4560
¡Á 100% ??
R5486
= 83,1206.. ?..%
¡Ö 83,12% ?
2.6
2.7
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
F 1: Knowledge to add
SF2: correct values used
A 1:Accurate answer
(3)
(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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