1. PRACTICE PAPER 8
PRIMARY 3 MATHEMATICS
Answer Key
Section A:
Qn Qn Qn Qn
1. 4 6. 4 11. 1 16. 1
2. 1 7. 3 12. 2 17. 4
3. 1 8. 1 13. 2 18. 1
4. 1 9. 4 14. 4 19. 3
5. 1 10. 3 15. 3 20. 2
Section B:
Qn
21 723
22 1000 + 7893 (M1)
= 8893 (A1)
23 256 x 9 (M1)
= 2304 (A1)
24 1400 – 243 = 1157 (M1)
1157 + 1400 = 2557 (A1)
25 43 + 18 = 61(M1)
61 + 18 = 79 (A1)
26 378 ÷ 6 = 63 (M1, A1)
27 30 – 3 = 27 (M1)
27 + 15 = 42 (A1)
28 48 ÷ 4 =12 (M1)
12 x 2 = 24 (A1)
Or
48 ÷ 2 =24 (M1, A1)
29 3 x $50 = $150
7 x $10 = $70
150 + 170 = 220 (M1)
220 – 157 = $63 (A1)
30 4000 + 502 = 4502 (M1)
4502 m = 4 km 502 m(A1)
31 A: 12 X 9 = 108
B: 11 X 9 = 99
32 25 x 2 = 50
530 – 50 = 480 (M1)
480 ÷ 4 = 120 (A1)
33 4, 8, 12, 16, 20, 24, 28, 32
8, 16, 24, 32, 40,
(Able to list the
multiplication of 4 and 8
correctly, will be awarded
M1)
A1 for final answer, 16 or
24
34 18 ÷ 2 = 9 (M1)

2. 9 x 5 = 45 (A1)
35 156 x 2 = 312 (M1)
312 – 28 = 284 (A1)
36 500 cm – 186 cm = 314 cm
314 cm – 80 cm = 234 cm (M1)
2 m 34 cm (A1)
37
1 kg + 1 kg + 200 g = 2 kg 200 g (M1)
2000 g + 200 g = 2200 g (A1)
38
2 units  554 – 100 – 100 – 100
= 254 (M1)
1 unit  254 ÷ 2
= 127(A1)
39 12 x 6 = 72 ℓ (M1)
72 ÷ 4 = 18 (A1)
40
4 rugs  108 x 3
= 324 (M1)
1 rug  324 ÷ 4
= 81 (A1)
Section C:
c c c
r r r r
$108
100 100 100
100
200 g
1kg
1kg 1kg
?
A
B
554
D
M
B

3. 41.
3 pants
$225
4 shirts
7 units  225 – 15 …………………..M1
= 210
1 unit  210 ÷ 7……………………..M1
= 30
4 units  30 x 4……………………...M1
= $120(penalise half mark for omission of units)…………....A1
42.
1500
M
F 2842
C
1500 – 400 ………………………………M1
= 1100 (female)
2842 – 1500 – 1100 …………………….M2
= 242……………………………………....A1
Or
1500 – 400………………………………..M1
= 1100 (female)
1500 + 1100 ……………………………...M1
= 2600 (female and male)
2842 – 2600 ……………………………...M1
= 242………………………………………A1
Or
1500 – 400 = 1100 ……………………………...M1
1100 + 1500 = 2600 ……………………………...M1
2842 – 2600 = 242 ……………………………...M1, A1
43.
1374
$5
$5
$5
40
0
1100
?
1100
340

4. A
B
2 units  1374 – 340 ……………………M1
= 1034
1 unit  1034 ÷ 2…………………………M1
= 517
3 units  517 x 3………………………….M1
= 1551…………………………..A1
Or
2 units  1374 – 340 ……………………M1
= 1034
1 unit  1034 ÷ 2…………………………M1
= 517
517 – 340 ………………………………….M1
= 177
1374 + 177
= 1551………………………………………A1
44. ?
Ro
S
Ri 198
(a) 2 units  198
1 unit  198 ÷ 2 ……………………M1
= 99 cm (penalise half mark for omission of units)……….....A1
(b) 9 units  99 x 9 …………………….M1
= 891 cm
891 = 8 m 91 cm(penalise half mark for omission of units)……….....……...A1
45.
B B B B B

5. 3577g
1971
1606
803 x 2 ………………………………………….M1
= 1606 (2 boxes and 2 flower vases)
3577 – 1606 ……………………………………M1
= 1971 (3 boxes)
1971 ÷ 3 ………………………………………...M1
= 657g(penalise half mark for omission of units)…………………..A1
V V