Primary 4 March Review 4featured

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

8–  3

9–  1

Qn 9

 

 

 

 

10–  4

Fraction of blue marbles –>  1/3 × 4/5 = 4/15

Fraction of green marbles –>  15/15 – 1/5 – 4/15 = 8/15

8u – 3u = 5u

5u –>  15 marbles

1u –>  3 marbles

3 × 15u = 45 marbles

 

11–  317 , 371 , 713 , 731

12–  3/8

13–  72

1 + 2 + 3 + 5 + 6 + 10 + 15 + 30 = 72

 

14–  5

15–  540 g

2u –>  120 g

1u –>  60 g

60 g × 9 = 540 g

 

16–  Clara

17–  15 stamps

Number of foreign stamps given away –>  1/3 × 135 = 45

45 ÷ 3 = 15 stamps

 

18–  8219

19–  55 ducklings

Qn 19

 

 

 

 

2u –>  160 – 25 – 25 = 110

110 ÷ 2 = 55 ducklings

 

20–  28 cookies

Qn 20

 

 

 

 

 

1u –>  44 – 8 – 8 – = 28 cookies  

 

21–  $35

Cost of 1 blouse –>  $136 – $114 = $22

1 blouse + 1 skirt –>  $114 ÷ 2 = $57

$57 – $22 = $35

 

22–  $972

Mandy –>  1u

Cara –>  4u

Shereen –>  3u

8u –>  $2592

1u –>  $324

$324 × 3 = $972

 

23–  a ->  32 green buttons ,   b –>  12/25

100 – 20 = 80 (remainder)

2/5 × 80 = 32 green buttons     ———– (a)

100 – 32 – 20 = 48 blue buttons

48/100 = 12/25  ————— (b)

 

24–  1350 beads

1100 – 200 = 900

Number of beads Kelly has –>  900 ÷ 2 = 450

Number of beads Deborah has –>  450 + 200 = 650

Number of beads Jennifer has –>  450 ÷ 3 = 150

450 + 650 + 150 = 1350 beads

 

25–  158 chocolates

Common multiple of 4 and 7 –>  28

Marcus –>  28 u

Samantha –>  16 u ———>  4 /7 = 16/28

Emily –>  35 u    ——>  4/5 = 28/35

35 u – 16 u = 19u

19 u –>  38 chocolates

1u –>  2 chocolates

79u × 2 = 158 chocolates

 

 

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