Ans:
1– 966
2– ¾
3– thousandths
4– 12m – 7
5– 28%
6– $6000
7– $2375
8– 94
9– 13 1/3 km
10– $200
11– pyramid
12– 1 : 13 : 52
13– 36%
14– 12 cm²
15– Sunday 04 05
16– 30%
17– $3.05
18– $900
19– Carol
20– $46
Math Blog
Tag Archives: Prelims
Primary 6 August Problem Sums Ex 4
Ans:
1– a-> 762 marbles b-> 300 marbles
2– a-> 10% b-> $3420 c-> $6840
3– Megan-> 23 ¼ km/h Jon-> 69¾ km/h
4– 696 stamps
5– 22 members
6– 19 cm
7– 27 trips
8– 16 wooden tables
9– 52/9x ¢
10– 99 marks
11– 28 cm
12– a-> 40 cm, b-> 64 cm , c-> 3280 cm², d-> 840 cm², e-> Figure 24
13– $40 125
14– 4 : 5
15– 4 hours
16– a-> 164.38 cm², b-> 82.83 cm
17– $64
18– a-> 61 250 cm³, b-> 144.25l
Posted in August, Primary 6, Problem Sums, Revision
Tagged August, difficult, heuristic, Prelims, Primary 6, problem solving, problem sums, PSLE, revision, Singapore, word problems
Primary 6 Prelims Ex 4
Ans:
1– 1 ½
2– ¼
3– $8.50
4– (n -4) /2
5– 15 cm
6– $72
7– 1 1/3 hr
8– 174°
9– 24 erasers
10– 13.00
11– 100.48 cm²
12– 210
13– 46 coins
14– 90 cubes
15– $160
16– 89/90
17– $345
18– 75 km/h
19– 2079 cm²
20– Refer to attachment
Primary 6 Prelims Ex 2
Ans:
1– 29
2– 0.4 kg
3– 6.25
4– 44
5– 21 : 4
6– 12 revolutions
7– $19.60
8– 9 boys
9– $(50y -90)
10– 25 600 π cm³
11– 60%
12– 51
13– Northwest
14– $1710
15– 57°
16– $66
17– 15 m
18– 77 cm²
19– 7.54 m
20– $687.50
