Tag Archives: easy

Primary 5 Ratio Level 2 Ex 5

P5-Ratio-L2-Ex5

Ans:

1–  4

2–  $59

12u –> $354

1u –> $29.50

$29.50 × 2 = $59

 

3–  12 : 16 = 3 : 4

4–  3 : 7

5–  2 : 3

Breadth –>  30 – (9 × 2 ) /2 = 6 cm

6 : 9 = 2 : 3

Continue reading

Primary 6 Speed Level 1 Ex 2

P6-Speed-L1-Ex2

Ans:

1–  4

12 min –>  3 km

1 hr  (60min) –>  3 km × 5 = 15 km/h

 

2– 1

3–  3

4–  2

5–  4

6– 2

Distance cycled in the first 4 min –>  200 m/min × 4 = 800 m

Distance cycled int he next 2 min –>  250 m/min × 2 = 500 m

800 m + 500 m = 1300 m

Continue reading

Primary 5 CA1 Revision 11

P5-CA1-Ex11

Ans:

1–  3 000 303

2–  8

3–  49   1/2

4–  2500

5–  4   5/12

6–  18

7–  2   31/48

8–  2   19/24 kg

9–  $104

Cost of 4 pens –>  4 × $12 – $48

$48 + $56 = $104

Continue reading

Primary 4 CA1 Revision 4

P4-CA1-Ex 4

Ans:

1–  2

2–  4

3–  4

4–  4

5–  4

6–  2

7–  4

3000 + 78 230 = 81 230 = 75 thousands, 62 hundreds, 30 ones

Continue reading

Primary 6 Algebra Level 1 Ex 5

P6-Algebra-L1-Ex 5

Ans:

1–  3

2–  4

3–  2

4–  4

Length of rectangle –>  (z+ 7) cm

z + z + 7 + z + z+ 7 = (4z + 14) cm

 

5–  1

6–  2

4 pencils –>  n cents

20 pencils ->  n¢× 5 = 5¢

5n cents – $1 = (5n – 100) cents

Continue reading

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

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