Primary 6 Mathematics - Ministry Of Education

Primary 6 MathematicsWest View Primary School

SINGAPORE MATHEMATICAL FRAMEWORKWest View Primary School

Overview Examination Format Strategies Marks deduction Common Mistakes made by pupils- Fractions- Ratio & PercentageWest View Primary School

Examination FormatPaper1Types of QnsMarksDurationBooklet A : 15 MCQ10x1m5x2m10x1m5x2m50 minBooklet B : 15 ShortAnswerTotal : 40%2Q1 – Q5 : Short-Answer5x2mQ6 – Q18 : Long-Answer5x3m5x4m3x5m1h 40minTotal : 60%West View Primary School

2 ESSENTIAL TRAITSREQUIRED1. SPEED2. ACCURACYWest View Primary School

Strategies for Paper 1 NO calculators allowed Read and understand the question Basic skills: Four operations Complete within given time (50mins) Check: reasonableness, working

Strategies for Paper 2 Calculators allowed Read and understand the question Apply heuristics: Model drawing, etc. Presentation of solutions Check: reasonableness, units

Paper 2 – Marks deduction Absence of unit in answer : ½ mark(For 3, 4 and 5 marks questions)Eg : cm, m, km, g, kg, ⁰, etc. Wrong Mathematical Statement : ½ mark(For 4 and 5 marks questions)Eg :1 – 50 50100 23 123 – 15 107 etcWest View Primary School

Example .Mr Lim and his family left Singapore for Hong Kong with 4 pieces of luggage.The average mass of the luggage was 16.7 kg. After some shopping, they hadfilled their luggage completely so they bought another piece of luggage tokeep the remainder of their purchases before leaving Hong Kong.(a) If the average mass of the luggage on their trip back to Singapore was25.4 kg, what was the total mass of their purchases in Hong Kong?(b) They were limited to a total of 100 kg of luggage when boarding the planefor Singapore. By how much did their luggage exceed the maximum massallowed?(a) 16.7 x 4 66.825.4 x 5 127 - 66.8 mathematical statement error 60.2(b) 127 - 100 27Ans : (a) 60.2 kg[3]Should be :(b) 27 kg [1]25.4 x 5 127127 – 66.8 60.2missing unitsWest View Primary School

Marks deduction Guess & Check Method :MUST put in values (guess) into the(all) conditions to CHECK forvalidation! Otherwise no marks willbe awarded West View Primary School

Example Daniel had 40% as many marbles as Ethan. Daniel gave away 8 marbles to hisbrother and Ethan lost 40 of his marbles in a game. Then Daniel had half asmany marbles as Ethan.(a) How many marbles did Daniel have at first?(b) How many marbles did Ethan have at first?DanielEthanCheck40 – 8 32100 – 40 60X60 2 3044 – 8 36110 – 40 70X70 2 3548 – 8 40120 – 40 80/80 2 40Ans : (a)48[3](b)120[2]West View Primary School

Common ErrorsWest View Primary School

45% of a vegetable garden is planted with peas. 3/5 ofthe remaining area is planted with beans and the rest isplanted with potatoes. The area of the garden is 121 m2.Find the area of the garden planted with potatoes.West View Primary School

There are 360 principals in a certain number of schools. 50% ofthe principals are primary school principals.are principals of pre-university institutions. Find thenumber of secondary school principals in the schools.West View Primary School

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Amount of money to written to 2 decimal places.West View Primary School

I am thinking of a number. When I increase thenumber by 80%, I get 162. What is the number?Error in calculation.The pupil couldhave detected it ifhe/she had appliedthe reasonablenesscheck.Note: Question allowedthe use of calculator.West View Primary School

HAMOSA strategy to help pupils make sense of word problems.West View Primary School

1. Think “what is the Question about?”Less / More Than orSet orPart-Whole Relationship orConstant Total / Difference / Variable or ?2. Use HAMOS3. Study the answer provided.4. If you get the answer wrong, docorrections.West View Primary School

Highlight – the questionAnnotate – link the information givenMethod – draw a model/diagram/tableto understand the questionOperations – identify the operations tobe carried outSelf-check – check workingWest View Primary School

Question 1Mr Rashid has 9/10 kg of chilli powder. Herepacks them into packets of 1/5 kg each.How many such packets does he get?West View Primary School

Question 2Jamil had some soccer-player cards last year. Hebuys 175 more cards to increase his collection by35%. How many cards does he have now?West View Primary School

Question 33The price of a ring is the price of a necklace .4If the price of the ring is 240, what is the priceof the necklace? 240Ring3 u ----- 2401 u ----- 240 3 80Necklace?4 u ----- 80 x 4 320West View Primary School

Question 4During the school Sports Meet, a total of 400medals were awarded to the participants. 28%of the medals were won by the Red Team, 4/9of the remainder by the Green Team and therest by the Yellow Team. How many medals didthe Green Team win?West View Primary School

Question 5Molly and Nera each had 70 stickers atfirst. After Molly gave Nera somestickers, Molly had 3/4 of the number ofstickers Nera had. How many stickers didMolly give Nera?West View Primary School

Question 6Mr Rodney drove 22 km from Town A toTown B at an average speed of 44 km/h.He continued his journey to his housefrom Town B, driving another 72 km at anaverage speed of 48 km/h. How muchtime did he take for the whole journey?West View Primary School

Q&AWest View Primary School

West View Primary School 4 3 Ring Necklace 240 ? 3 u ----- 240 1 u ----- 240 3 80 4 u ----- 80 x 4 320 . Question 4 During the school Sports Meet, a total of 400 medals were awarded to the participants. 28% of