1. PRACTICE PAPER 7
PRIMARY 3 MATHEMATICS
Answer Key
Section A:
1. 4 6. 3 11. 2 16. 3
2. 2 7. 4 12. 1 17. 4
3. 4 8. 1 13. 2 18. 4
4. 4 9. 1 14. 1 19. 3
5. 4 10. 2 15. 2 20. 3
Section B: *Refer to marking scheme.
21. 8 kg 60 g 31. 6.05 pm
22. 6 hr 55 min 32. 32 peaches
23.
3
2 33. 18 boxes shaded
24.
6
5
,
9
4
,
3
1 34. 2 h 10 min
25. 2 h 37 min – 55 min = 1 h 42 min (M1)
1 h 42 min + 2 h 37 min = 4 h 19 min
(A1)
35.
3
1
26.
12
1 36. 90 min
27.
12
12
-
12
5
-
12
5
=
12
2
=
6
1
(M1A1)
37.
7
3
28. $9 38.
29. 16 39. 1 kg 15 g
30. 2 km 400 m 40. $3 = 12 tickets
$9 = 18 tickets (M2)
Section C: *Refer to marking scheme.
41) $6069.45 - $3125.95 = $2943.50 (M1A1)
$6069.45 + $3125.95 = $9195.40 (M1A1)
(a) Siew Min saved $2943.50 more than Selvi.
(b) They saved $9195.40 altogether.
10 min
Ans:
5.35 (A1)
6.00 6.10
25min(M1)

2. ____________________________________________________________________
42) 36 x $5 = $180 (M1A1)
$308 - $180 = $128 (M1 A1)
The 36 pumpkins cost $128.
____________________________________________________________________
43) 9.30am 10.24 am 11am
18 min 18 min 18 min
11 hr 0 min – 9 hr 30 min = 1 h 30 min = 90 min (M1A1)
90 min ÷ 5 = 18 min (M1A1)
The fourth plane will leave at 10.24 am.
____________________________________________________________________
44)
Red Orange
2
1
=
8
4
(A1)
1 unit 45 beads (M1)
8 units 45 x 8 = 360 (M1A1)
Sammy has 360 beads altogether.
____________________________________________________________________
45) WM + TV + RC = $3000
TV + RC = $2550
WM + TV = $2850
WM $3000 - $2550 = $450 (M1)
RC $3000 - $2400 - $450 = $150 (A1)
TV $3000 - $450 - $150 = $2400 (M1A1)
x 4
x 4
45