Tag Archives: revision

Primary 6 April Review 4

P6-Apr-Review4

Ans:

1–  4

2–  4

3–  4

4–  4

Option 1 -> 103/1000

Option 2 –>  97/1000

Option 3 –>  150/1000

Option 4 –>  70/1000

Therefore, Option 4 has the smallest value.

 

5–  2

6–  4

Volume of 1 cube->  3 cm × 3 cm × 3 cm = 27 cm³

27 cm³ × 8 = 216 cm³

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Primary 4 March Review 4

P4-Mar-Review 4

Ans:

1–  2

2–  3

3–  3

4–  2

3   2/3 = 11/3 = 22/6

 

5–  1

Total number of tourists –>  180 + 160 + 220 + 140 + 220 = 920

140/920 = 7/46

 

6–  3

Fraction of money Charmaine saved ->  8/8 – 3/8 = 5/8

5/8 × $7208 = $4505

 

7–  4

Length of each ribbon –>  3/12 = 1/4 m

1/4  × 5 = 5/4 = 1  1/4 m

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Primary 5 CA1 Revision 12

P5-CA1-Ex12

Ans:

1–  $384

Christina –>  1u

Molly ->  3 u

Jack –>  1u + $65

5u + $65 = $705

5u –>  $705 – $65 = $640

1u –>  $640/5 = $128

$128 × 3 = $384

 

2–  235 paper clips

Before:                      Tom               :                   Jenny
1                   :                           5

——->     2                  :                         10

After:                             1                   :                           2

——>      5                  :                       10

5u – 2u = 4u

3u –>  141 clips

1u –>  47 clips

47 × 5 = 235 paper clips

 

3–  $60

3u –>  $36

1u –>  $12

$12 × 5 = $60

 

4–  9 years’ time

[Constant Difference]

3u –>  51 years

1u –>  17 years old

17 – 8 = 9 years’ time

 

5–  See belowQn 5

 

 

 

 

 

 

 

 

 

6–  18 coins

Multiples of 5 –>  5         10           15
+ 3  ->  8         13           18

Multiples of 4 –>   4         8             12            16
+ 2 ->   6         10          14           18

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Primary 3 February Review 3

P3-Feb-Review 3

Ans:

1–  2

2–  4

3–  2

4–  2

1233 + 3870 = 5103

5103 – 1789 = 3314

 

5–  3

heart= 68 ÷ 4 = 17

159 + 17 = 176

 

6–  2

7–  4

8–  1

9–  1

709 – 163 = 546

546 ÷ 7 = 78 bags

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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

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Primary 3 January Review 5

P3-Jan-Review 5

Ans:

1–  3

2–  2

3–  2

[Option 1 is the smallest value but it is an odd number]

 

4–  2

The smallest possible even number that can be formed is 3470.

 

5–  1

482 – 253 = 229 blue marbles

253 -229 = 24 more black marbles

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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

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Primary 2 January Review 1

P2-Jan-Review 1

Ans:

1–  2

2–  2

2 hundreds = 200

3 tens 6 ones = 36

200 – 36 = 164

 

3–  2

4–  4

5–  2

5 hundreds 2 tens = 520

3 hundreds 1 ten 4 ones = 314

520 – 314 = 206

 

6–  1

7–  1

8–  3

700 – 500 = 200 = 20 tens

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Primary 3 January Review 4

P3-Jan-Review 4

Ans:

1–  3

2–  2

[Add 201 to the previous term]

 

3–  2

4–  3

5–  4

6–  3

7–  3

9000 – 60 = 8940

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Primary 3 January Review 3

P3-Jan-Review 3

Ans:

1–  2

2–  3

3–  3

4–  3

5–  4

6–  1

7–  4

8–  3

9–  4

Number of girls in the class ->  24 + 5 = 29

29 + 24 = 53 pupils

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