Tag Archives: easy

Primary 3 CA1 Revision 5

P3-CA1-Ex 5

Ans:

1–  6854

2–  2664

3– 2790

4–  8791

5–  4000

6480 — 2394 = 4086

80 + 6 = 86

4086 — 86 = 4000

 

6–  9731

8731 + 1000 = 9731

Con­tinue read­ing

  

Primary 2 Whole Numbers Level 1 Ex 2

P2-Whole Numbers-L1-Ex 2

Ans:

1–  3

2–  3

3–  1

4–  3

5–  3

6–  2

7 hun­dreds 8 tens 12 ones –> 792

1 hun­dred 2 tens 2 ones –> 122

792 — 122 =  670 

Con­tinue read­ing

  

Primary 6 Algebra Level 2 Ex 5

P6-Algebra-L2-Ex5

Ans:

1–  $(7y/2) /  $3.50y

Price of 1 durian –>  $(y/10)

$(y/10) × 35 = $(7y/2)/ $3.50y

 

2–  55

3–  (35 

4–  (4+ 10) years old

Brother’s age –>  3n + 9 — 2n = (n + 9) years old

Total age now –>  3n + 9 + n + 9 = 4n + 18 years old

4n + 18 – 4 – 4 = (4n + 10) years old

 

5–  $(m – 20)/3

6–  4.5z² cm²

Area of Tri­an­gle WXY –>  1/2 × 3z × 1.5= 2.25 z² cm²

2.25 z² × 2 = 4.5z² cm²

Con­tinue read­ing

  

Primary 2 Whole Numbers Level 1 Ex 1

P2-Whole Numbers-L1-Ex 1

Ans:

1–  1

2–  3

3–  2

1 rec­tan­gle –>  16 ÷ 2 = 8

8 + 3 = 11

 

4–  3

9 + 3 + 9 + 3 = 24

24 ÷ 4 = 6

 

5–  2

6–  4

7–   Con­tinue read­ing

  

Primary 6 Algebra Level 1 Ex 4

P6-Algebra-L1-Ex 4

Ans:

1–  1

2–  1

3–  4

12x + 19 + (4x × 6 ÷ 3) – 8
= 12x + 19 + 8x - 8 = 20x + 11

 

4–  2

5–  2

Amount left after giv­ing her daugh­ter —  $(800 — 40z)

Each son ->  $(800 — 40z) ÷ 3

Con­tinue read­ing

  

Primary 3 Fractions Level 1 Ex 1

P3-Fractions-L1-Ex1

Ans:

1–  4

2–  2

3–  4

4/16 = 1/4

 

4–  1

5–  3

6–  2

7–  1

Total num­ber of daisies –>  2 + 3 + 4 = 9

3/9 = 1/3 

Con­tinue read­ing

  

Primary 3 Money Level 2 Ex 1

P3-Money-L2-Ex 1

Ans:

1–  $44

Amount of money she spent ->  $100 — $12 = $88

$88 ÷ 2 = $44

 

2–  3410¢

3–  $173.80

Cost of a fan ->  $99.85 — $25.90 = $73.95

Total cost –>  $99.85 + $73.95 = $173.80

 

4—  7 coins

5–  $5.55

6–  8 pack­ets 

Amount of money Janet spent -> $20 — $4  = $16

$16 ÷ $2 = 8 pack­ets 

Con­tinue read­ing

  

Primary 3 Money Level 1 Ex 2

P3-Money-L1-Ex 2

Ans:

1–  3

2–  2

3–  3

4–  2

5–  3

6–  4

two 50¢-coins -> $1

three 10¢-coins -> $0.30

six 5¢-coins -> $0.30

Total ->  $1 + $0.30 + $0.30 = $1.60

Con­tinue read­ing

  

Primary 3 Money Level 1 Ex 1

P3-Money-L1-Ex 1

Ans:

1–  1

2–  1

$100 — $ 4 + $96  (amount spent on the comics)

$96 ÷ $8 = 12 comics

 

3–  1

4–  3 Con­tinue read­ing

  

Primary 6 Speed Level 2 Ex 1

P6-Speed-L2-Ex 1

Ans:

1–  52 km/h

11.25 a.m. to 2.40 p.m. –>  3 h 15 min = 3  1/4 h

169 km ÷ 3  1/4 h = 52 km/h

 

2–  2.4 m/s

Dis­tance between 1st floor and 25th floor –>  24 × 4 = 96 m

96 m ÷ 40 sec = 2.4 m/s

 

3–  60 km/h

Time taken 180 km ÷ 54 km/h = 3  1/3 h = 3 h 20 min

New time –>  3 h 20 min — 20 min = 3 h

180 km ÷ 3 h = 60 km/h

Con­tinue read­ing