PSLE Mathematics

Dr Yeap Ban HarDr Yeap Ban HarMarshall Cavendish Institute

Singapore

Slides are available atwww.banhar.blogspot.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.

Jane, Xueling and Siti collected some seashells at a beach. Jane and Xueling collected 5/8 of the total number of seashells. Xueling and Siti collected 80% of the total number of seashells. Siti collected 14 more seashells than Jane. How many seashells did Xueling collect?

Gifted Education Programme Primary 6 Common Test 2

Jane and Xueling

Siti and Xueling64 units

Siti – 30 unitsXueling – 34 units

Jane – 16 units

14 units = 14 shells

34 units = 34 shells

Xueling collected 34 seashells

PSLE 2006 – 2010 Page 13 Question 45

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

List 1 List 2

11 + 622 + 633 + 644 + 655 + 666 + 6

16 + 2524 + 2532 + 2540 + 2548 + 2556 + 25

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.

PSLE 2006 – 2010 Page 19 Question 58

11m + 6 = 8(m + 1) + 25

8n + 25 = 11(n – 1) + 6

There were 10 girls. m = 9

n = 10