p3 math practice paper 8 2013 answer key
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PRACTICE PAPER 8PRIMARY 3 MATHEMATICS
Answer KeySection A:Qn Qn Qn Qn1. 4 6. 4 11. 1 16. 12. 1 7. 3 12. 2 17. 43. 1 8. 1 13. 2 18. 14. 1 9. 4 14. 4 19. 35. 1 10. 3 15. 3 20. 2
Section B:Qn21 72322 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 = $1507 x $10 = $70150 + 170 = 220 (M1)220 – 157 = $63 (A1)
30 4000 + 502 = 4502 (M1)4502 m = 4 km 502 m (A1)
31 A: 12 X 9 = 108B: 11 X 9 = 99
32 25 x 2 = 50530 – 50 = 480 (M1)480 ÷ 4 = 120 (A1)
33 4, 8, 12, 16, 20, 24, 28, 328, 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)9 x 5 = 45 (A1)
35 156 x 2 = 312 (M1)312 – 28 = 284 (A1)
36 500 cm – 186 cm = 314 cm314 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)
200 g
1kg
1kg 1kg
?
100 100 100
100
c c c
r r r r
$108
A
B
554
D
M
B
Section C:
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
$5
$5
$5
4001100
?
1100
43.1374
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 1981 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
340
340
45.
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
B B B B B
V V
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