Tag Archives: Worksheets

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 Prelims Revision 3

P6-Prelims-Ex 3

Ans:

1–  3 : 12 : 17

2–  4.95 cm

Length of the tank –>  180 cm³ ÷ 12 edges = 15 cm

33/100 × 15% = 4.95 cm

 

3–  100 balls

Total units of balls –>  5u + 4u = 9u

Units of balls in each bag in the end –>  9u/2 = 4.5u

5u — 4.5u = 0.5u —>  10 balls

1u –>  10 × 2 = 20 balls

20 × 5u = 100 balls

 

4–  540 km

5–  $24

1 blouse –> 1u

1 pair of jeans –>  1u + $12

3 pairs of jeans + 4 blouses –>  (1u + $12) × 3 + 4u = 7u + $36

7u + $36 -> $204

7u –>  $204 — $36 = $168

1u –>  $24

 

6–  891 beads

Red : Blue + Green
4   : 5

Blue : Green
3    :    8     –> 11u

Adjust the units for the blue and green beads such that they are the same in both cases.

Com­mon mul­ti­ple of 5 and 11 is 55u

There­fore,

Red  :  Blue + Green
44   : 55

Blue  :  Green
15   : 40

Red  :  Blue  :  Green
44 :    15   : 40

44u — 40u = 4u –>  36 beads

1u –>  9 beads

44u + 55u = 99u —->  9 beads × 99 = 891 beads

Con­tinue read­ing

  

Primary 6 SA1 Revision 12

P6-SA1-Ex 12

Ans:

1–  175

2–  $43.50

70% of the price –>  $101.50

30% –>  $101.50/70 × 30 = $43.50

 

3–  (3+ 6) kg

Alan’s mass ->  (+ 3) kg

Nicholas’ mass ->  (m + 3) — 2 = (+ 1) kg

Brett’s mass ->  (+ 1) + 1 = (+ 2) kg

(m + 3) + (+ 1) + (+ 2) = (3+ 6) kg

 

4–  195 km

1  1/2 h× 80 km/h = 120 km

45/60 h × 100 km/h = 75 kg

120 km + 75 km = 195 km

 

5–  $6441.60

Earn­ings in Jan­u­ary –>  122/100 × $6000 = $7320

Earn­ings in Feb­ru­ary –>  88/100 × $7320 = $6441.60

 

6–  30 peo­ple

Frac­tion of men  –>  30/100 = 3/10 = 9/30

Frac­tion of men if 10 women alighted –>  45/100 = 9/20

Women –>  30u — 9u = 21u

20u — 9u = 11u

10u –>  10 women

30 u –>  30 people

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 2 Whole Numbers Level 3 Ex 1

P2-Whole Numbers-L3-Ex 1

Ans:

1–  241 mar­bles

2–  538 stamps

Num­ber of stamps Irene has –>  325 — 112 = 213

325 + 213 = 538 stamps

 

3–  202 mar­bles

4–  40 pupils

5–  30 apples

Num­ber of apples in each bas­ket –>  2 + 3 = 5

5 × 6 = 30 apples

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 6 April Problem Sums 5

P6-PSP-Apr-Ex 5

Ans:

1–  30 m

Spaces between 100 trees –> 99

Dis­tance between each tree –> 297 m ÷ 99 = 3 m

3 m × 10 spaces = 30 m

 

2–  28 pupils

Num­ber of pupils who passed one or both sub­jects –> 40 — 2 = 38

30 + 36 = 66

66 — 38 = 28 pupils

 

3–  a ->  (18s + 24) kg ,   b ->   16 kg

Mass of chicken –>  3s kg

Mass of puppy –>  (3s + 4) kg

Mass of dog –>  (3+ 3s + 4) kg × 2 = (12+ 8) kg

3s + 3s + 4 + 12s + 8 = (18s + 12) kg                   (a)

18 × 2 + 12 = 48 kg

48 kg ÷ 3 = 16 kg                           (b)

 

4–  $51.30

Total cost of 5 apples and 5 man­goes –>  $3.25 × 5 = $16.25

Cost of 3 apples –>  $17.60 — $16.25 = $1.35

Cost of 1 apple –> $1.35 ÷ 3 = $0.45

Cost of 1 mango –> $3.25 — $0.45 = $2.80

Cost of 2 man­goes and 7 apples –>  $2.80 × 2 + $0.45 × 7 = $8.70

$50 — $8.70 = $51.30

Con­tinue read­ing