Tag Archives: Singapore

Primary 5 CA2 Revision 1

P5-CA2-Ex 1

Ans:

1–  3

2–  1

3–  2

Area of square –>  8 cm × 10 cm = 80 cm²

Base of tri­an­gle –>  14 cm — 8 cm = 6 cm

Area of tri­an­gle –>  1/2 × 6 cm × 10 cm = 30 cm

80 cm + 30 cm = 110 cm²

 

4–  3

5–  2

1 hour –> 60 min × 60 = 3600 sec

3600/100 = 36 sets of 100 seconds

36 × 10 = 360 lol­lipops

 

6–  2

11.00 a.m. to 12 p.m. –> $2

12 p.m. to 2.30 p.m. –>  2.5 hours ≈ 3 hours –> 3 × $1 = $3

$3 + $2 = $5

Con­tinue read­ing

Maths Classes for 2015

Small group/1-to-1 tuition classes

Group classes will be con­ducted with no more than 6 students.

I will pro­vide all work­sheets and test papers at no extra cost.

Group classes — 2 hours per les­son, $120 for 4 lessons.
Loca­tion — Still Road (near­est MRT — Eunos)

Sat Class

Sat Class

JJ- She failed her SA1. Within one term of tuition, she improved so much that scored full marks for her CA2. :)

JJ– She failed her SA1. Within one term of tuition, she improved so much that she scored full marks for her CA2. :)

Well done Qianqi (Band 1, improvement from a Band 2 in one term)

Well done Qianqi (Band 1, improve­ment from a Band 2 in one term)

Good job Ryan (92%, up from 83% when he first joined)

Good job Ryan (92%, up from 83% when he first joined)

 

 

 

 

 

 

 

 

 

Faith's SA1- she improved by 24 marks in one term :)

Faith’s SA1– she improved by 24 marks in one term :)

 

Avail­able slots:

Tue – 4 — 6 p.m.

Sat —   10 a.m. — 12 p.m.    

Sat —  1 — 3 p.m.

Call me for 1 free trial class.

Unfor­tu­nately, for indi­vid­ual lessons, I can only accept stu­dents liv­ing in the East.

1-to-1 lessons — 1.5 hour per les­son, $50 per hour.

Feel free to call/sms/email me at 91603500; ange@talkingmaths.com  for more infor­ma­tion. No obligations!

Primary 4 CA2 Revision 3

P4-CA2-Ex 3

Ans:

1–  376 women
Qn 1

 
11u –> 2068

1u –> 188

188 × 2 = 376 women

 

2–  $49

Cost of 25 crates of apples –>  $58 × 25 = $1450

Cost of 3 crates of oranges —  $1597 — $1450 = $147

$147 ÷ 3 = $49

 

3–  $17

Cost of 6.5 kg of prawns –>  $24 × 6.5 kg = $156

Cost of 2 kg of fish –>  $190 — $156 = $34

$34 ÷ 2 = $17 

Con­tinue read­ing

Primary 4 CA2 Revision 2

P4-CA2-Ex 2

Ans:

1– 152.35

2–  2  1/4

3–  15 013

4–  22   1/50

5–  See below

Qn 5

 

 

 

 

Con­tinue read­ing

Primary 4 CA2 Revision 1

P4-CA2-Ex 1

Ans:

1–  3

2–  4

3–  3

4– 4

5–  2

29/50 + 7/100
= 58/100 + 7/100 = 65/100 = 0.65

 

6–  3

7–  1

1/3 ≈ 0.333

0.33 = 0.330

0.330 is smaller than 0.333

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Primary 3 August Review 1

P3-Aug-Review 1

Ans:

1– 3

2–  4

3– 2

4–  3

5–  3

6–  3

The clock shows 6.20 p.m..

15 min­utes before 6.20 p.m. –>  6.05 p.m.

 

7–  1

Orig­i­nal length of string ->  2 m 27 cm -> 227 cm

227 cm — 78 cm = 149 cm

Con­tinue read­ing

Primary 6 Prelims Revision 9

P6-Prelims-Ex 9

Ans:

1– $45

Julian –> 1u

Fred­er­ick –> 2u

Mar­cus –> 6u

5u –> $25

1u –> $5

$5 × 9u = $45

 

2–  16 more tricycles

Assume all are tri­cy­cles –> 56 × 3 = 168 wheels

168 — 148 = 20 wheels extra

Each bicy­cle has 1 lesser wheel than each tricycle.

There­fore, 20 ÷ 1 = 20 bicycles

56 — 20 00= 36 tricycles

36 — 20 = 16 more tri­cy­cles than bicycles

 

3–  $44

4–  22.5 km/h faster

Mar­cus’ speed –>  270 /4 = 67.5 km/h

Mar­cus’ new speed –>  270/3 = 90 km/h

90 km/h — 67.5 km/h = 22.5 km/h faster

 

5–  396 boys

Girls –>  1u × 5 = 5u

Boys –>  (1u + 16) × 3 = 3u + 48

8u + 48 –>  976 pupils

8u –> 928

1u –> 116

116 × 3 + 48 = 396 boys

 

6–  $2945

7 hand­bags + 5 watches = 3 hand­bags + 11 watches

7 hand­bags — 3 hand­bags = 11 watches — 5 watches

4 hand­bags = 6 watches

6 watches –>  $285 × 4 = $1140

1 watch –>  $1140 ÷ 6 = $190

$285 × 7 + $190 × 5 = $2945

 

7–  300 stick­ers

Maxwell –> 100%

Jeanet­ter –> 120%

20/100 × 120% = 24%

120%  - 24% = 96% left

96% –>  288 stickers

1% — 3 stickers

3 × 100 = 300 stick­ers

 

8–  153 cm

17 + 13 = 30 cm — 3 pieces

1 piece –>  10 cm

14 × 10 cm + 13 cm = 153 cm

Con­tinue read­ing

Primary 6 Prelims Revision 8

P6-Prelims-Ex 8

Ans:

1–  966

Low­est com­mon mul­ti­ple of 2, 3 and 7 –> 42

999 ÷ 42 = 23 R 33

23 × 42 = 966

 

2–  75%

3–  Thou­sandths

4–  12- 7

5–  28%

6–  $6000

7–  $2375

8–  94 marks

Total marks for the 3 tests –>  79 marks × 3 = 237

237 — 69 — 74 = 94 marks

Con­tinue read­ing

Primary 5 July Review 3

P5-Jul-Review 3

Ans:

1–  2

2–  2

3–  2

4–  4

5–  3

0.8 = 8/10 = 4/5

Left–>  5/5 — 4/5 = 1/5

1u –> $3420

$3420 ×  4 = $13 680

 

6–  4

7–  1

Total amount of sugar –>  21 × 4 kg = 84 kg

84/8 = 10 4/8 = 10  1/2 kg

Con­tinue read­ing

Primary 4 July Review 2

P4-Jul-Review 2

Ans:

1–  3

2–  2

3–  2

4–  3

5–  2

6–  2

7–  2

8–  4

9–  2

3.39 — 2.09 = 1.3

1.3 ÷ 2 = 0.65

2.09 + 0.65 = 2.74

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