Tag Archives: easy

Primary 3 Fractions Level 2 Ex 1

P3-Fractions-L2-Ex 1

Ans:

1–  1/3,  7/12 , 3/4

2–  See below

Qn2

 

 

 

 

 

 

1/4 = 4/16 

4 squares must be shaded

 

3–  5/9

1/9 + 1/9 + 2/9 = 4/9

9/9 — 4/9 = 5/9

 

4–  Shane

1/2 = 4/8

4/8 is big­ger than 3/8

Con­tinue read­ing

Primary 6 Prelims Revision 6

P6-Prelims-Ex 6

Ans:

1–  $1225

18% = 9/50

90% = 9/10

There­fore,

Bran­don   :   Charles
50        :     10
5          : 1

6u –> $1470

1u –> $245

$245 × 5u = $1225

 

2–  9/10 h

Time taken to fill 1/9 of the tank –>  2/5 ÷ 4 = 1/10 h

1/10 h × 9 = 9/10 h

 

3–  8 pen­tagons

3 × 5 = 15 match­sticks for the 3 extra pentagons

60 — 15 = 45 match­sticks (The num­ber of squares and pen­tagons are now the same)

Num­ber of match­sticks needed to make 1 square and 1 pen­ta­gon -> 4 + 5
= 9

45/9 = 5

5 + 3 = 8 pen­tagons

 

4–  10 hours

55 min = 11/12 h

11/12 h + 3/4 h = 1   2/3 h

5  1/2 h ÷ 11/12 h = 6 sets

6 × 1   2/3 h = 10 hours

 

5–  $40

85% — 55% = 30%

30% –> $12

100% –>  12/30 × 100 = $40

Con­tinue read­ing

Primary 3 Length, Mass and Volume Level 1 Ex 1

P3-Length, Mass and Volume-L1-Ex 1

Ans:

1–  1

2–  3

3–  3

4–  2

5–  2

6–  4

7–  2

8– 2

Mass of apple –>  640 g ÷ 4 = 160 g

160 g + 640 g = 800 g

Con­tinue read­ing

Primary 6 SA1 Revision 11

P6-SA1-Ex 11

Ans:

1–  22

2– $100.00

3–  15 000.02 m

4–  7/8 ,  5/6 ,   1/2 , 1/4

5–  5 p.m.

2 h 15 min before 11.45 a.m. –>  9.30 a.m.

7 h 30 min after 9.30 a.m. –>  5 p.m.

Con­tinue read­ing

Primary 5 SA1 Revision 5

P5-SA1-Ex 5

Ans:

1–  200 0002 hun­dred thousands

2–  15 600

3–  298

4–  9

5–  9 : 7

$81 — $18 = $63 (Marianne’s)

Ali­son   :   Mar­i­anne
81       :      63
–>    9     : 7

 

6–  3

15 × 3/10 = 4 1/2

4   1/2 ÷  3/2 = 3

Con­tinue read­ing

Primary 4 SA1 Revision 5

P4-SA1-Ex 5

Ans:

1–  Twelve thou­sand, seven hun­dred and ninety-eight

2–  2568

3–  1885 / 1886 /1887 /1888/1889/1891/1892/1893/1894

4–  5/9

5–  875

6–  761

        761          ,        12 870     ,     24 969      ,     37 058    ,    49 137
( +12 109)     (+ 12 099)      (+ 12 089 )     (+ 12 079)

Con­tinue read­ing

Primary 3 SA1 Revision 7

P3-SA1-Ex 7

Ans:

1–  4

2–  3

3–  1

4–  1

Odd num­bers between 5 and 15 –>  7, 9, 11, 13

7 + 9 + 11 + 13 = 40

 

5–  2

6–  4

7–  2

8–  3

9–  2

10–  4

7 × 9 = 63

63 ×  = 189

Con­tinue read­ing

Primary 6 SA1 Revision 10

P6-SA1-Ex 10

Ans:

1–  3

2–  3

3–  4

2u –> 18 cm

1u –>  9 cm

Length –>  9 cm × 3u = 27 cm

Perime­ter –>  (18 + 27) cm × 2 = 90 cm

 

4–  2

5–  2

6–  3

Frac­tion of remain­ing cake –> 5/6

5/6 ÷ 1/12 = 10 pupils

Con­tinue read­ing

Primary 5 Ratio Level 1 Ex 5

P5-Ratio-L1-Ex 5

Ans:

1–  2

2–  4

3–  3

Local   :   For­eign
3        : 5

3u + 5u = 8u

8u –>  120 stamps

1u –>  120/8 = 15 stamps

15 × 3 = 45 local stamps

 

4–  3

5–  3

Perime­ter –>  Length + Breadth + Length + Breadth
->     3u        +    1u         +    3u       +      1u  = 8u

8u –> 40 cm

1u –>  40/ 8 = 5 cm

5 cm × 3 = 15 cm

 

6–  3

Son’s age –>  42 — 28 = 14 years old

42  :  14 =  3  : 1

Con­tinue read­ing

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