PSLE Mathematics Dr Yeap Ban Har Marshall Cavendish Institute Singapore www.banhar.com Photo Credit: Students solving a mathematics problem using draw-a-diagram heu at Da Qiao Primary School.
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PSLE Mathematics
Dr Yeap Ban HarMarshall Cavendish Institute
Singapore
www.banhar.com
Photo Credit: Students solving a mathematics problem using draw-a-diagram heuristic at Da Qiao Primary School.
3 units = $12
1 unit = $4
8 units = 8 x $4 = $32
Kyla had $32 at first.
Alternate Method$12 ÷ 3 x 8 = $32
Model Method
boys
girls
34
boys
girls
68
boys
girls
88 – 68 = 20
boys
girls
88 – 68 = 20
boys
girls
boys
girls
boys
girls
34
34 – 20
2 girls units = 14
1 girls unit = 7
3 girls units = 21
21 girls wore goggles that day.
PSLE 2006 – 2010 Page 13 Question 45
Photo: Woodlands Primary School
PSLE 2006 – 2010 Page 13 Question 46
1.2 m x 42 = 50.4 m
43 – 6 = 37 There were 36 spacing
50.4 m ÷ 36 = 1.4 m The new spacing was 1.4 m.
PSLE 2006 – 2010 Page 19 Question 58
Guess when each tried taking 11
33 Last girl had 11 sweets 41 Last girl had 8 sweets 49 Last girl had 5 sweets 57 Last girl had 2 sweets
PSLE 2006 – 2010 Page 19 Question 58
List 1 List 2
11 + 622 + 633 + 644 + 655 + 666 + 6
16 + 2524 + 2532 + 2540 + 2548 + 2556 + 2
PSLE 2006 – 2010 Page 19 Question 58
List 1 List 2
11 + 622 + 633 + 644 + 655 + 666 + 677 + 688 + 699 + 6
16 + 2524 + 2532 + 2540 + 2548 + 2556 + 2564 + 2572 + 2580 + 25
PSLE 2006 – 2010 Page 19 Question 58
3 x ? = 2 + 25
? = 9
There were 10 girls.
There were 9 x 11 + 6 = 8 x 10 + 25 = 105 sweets altogether.
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