This document contains the answer key for a Primary 3 Mathematics practice paper. It provides the answers to multiple choice and short answer questions across several sections. Some key details include: - Section A contains 20 multiple choice questions with answers ranging from 1 to 4. - Section B contains word problems requiring showing working and answers. - Section C contains longer word problems requiring multiple steps to arrive at answers. One problem involves calculating savings amounts and another involves determining the cost of pumpkins based on given information. The document models concise responses to math word problems at a primary school level, showing the steps and calculations to arrive at the final answers.

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