Revision of Past PSLE Questions (2019) From T2W5 (22 April 2025) by KellyLee (Mdm) https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx 6 Unity en-us 2025-04-22 04:06:43 UTC 2025-05-06 05:08:34 UTC hello@padlet.com Q16 2019 PSLE Paper 2 Kelly_Lee_Qwee_Lan https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418803191 Individual Work - Spend 5 min to review this question;


Pair Work - Spend another 5 min to solve this question;


Class discussion - 5 min

]]> 2025-04-22 04:08:48 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418803191 Alden https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418881860 (A)1. 5xpiex34=53.41(ans)

(B)53.41x5=267.05

267.05+22+12+16+12+22=351. 05 (ans)


]]> 2025-04-22 04:51:19 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418881860 Aurelia Q16 paper 2 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418881911 a)

3d+12+12=2d+22+16+22

3d+24=2d+60

3d-2d=1d

1d=60-24=36

ans:36cm

b)

circumference of semi circle=pix36x1/2=56.548866776

56.548866776X5=282.7433388

282.7433388+12+22+16+12+22=366.7433388

Round off to 366.74

Ans :366.74cm

]]> 2025-04-22 04:51:20 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418881911 Mikayla https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418882090 A) 22-12=10

10+10+16=36

Ans a: 36cm

B) pi x 36cm = 113.1

113.1 x 5=565.5

565.5 + 22 + 12 + 16 + 12 + 22 =649.5

Ans b: 649.5cm

]]> 2025-04-22 04:51:27 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418882090 Russel https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418882192 ANSWER CHANGE:b)After that, do 342.74+12+12=366.74

Answer: 366.74cm

]]> 2025-04-22 04:51:31 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418882192 Ian Cheong https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418882418 Q16

]]> 2025-04-22 04:51:38 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418882418 Alicia Q16 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418884704 (A) 22-16=6

16+6+6=28. Ans(28cm)

(B) 28x pi x1/2=43.98 (rounded)

43.98x5=219.9

219.9+22+22+12+12+16=303.9 Ans(303.9cm)


]]> 2025-04-22 04:52:54 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418884704 Isaac 22 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418885034 Diameter=22+16=38

Ans=38cm


Perimeter=1/2xPi x38=59.690

59.690x5=298.45

298.45+22+12+16+12+22=463.45

Ans=463.45cm

]]> 2025-04-22 04:53:05 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418885034 Zimae ques 16(2019 psle paper) https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418885866 2025-04-22 04:53:25 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418885866 2019 PSLE Paper 2 Q16 by Xuan Wee https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418886076 22cm-12cm=10cm

10cm+16cm+10cm=36cm (Diameter of the semicircle)

1 out of 2xcalculator pi x 36=56.54866776cm2

5x56.54866776=282.7433388cm2

282.7433388cm2+16cm+12cm+12cm+22cm+22cm=366.7433388cm2

366.7433388cm2 rounded to 2 decimal places=366.74cm2

Ans(a): 36cm

Ans(b): 366.74cm2

]]> 2025-04-22 04:53:33 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418886076 Emmanuel https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418886963 2019 PSLE Paper 2


(A)

22-16=6

Ans=16+6+6=28

(B)=28/2=14

14xpi=43.98

5 Circumference =43.98x5=219.91

Perimeter=219.91+22+12+16+12+22=303.91

Ans(a)=28cm

Ans(b)=303.91cm

]]> 2025-04-22 04:53:59 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418886963 Shane https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418886981 22-12=10

16+10+10=36

(a)ans:36cm

pi x 36/2=56.549

56.549x5=282.745

282.745+12+12+16+22+22=366.745

366.745=366.75

(b)ans:366.75cm

]]> 2025-04-22 04:53:59 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418886981 Q16(Xavier) https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418887938 22-12=10

16+10+10=36cm(ans)

Pi X 36/2=56.549

56.549x 5=282.745

282.745+22+16+22+12+12=366.74(Ans)



]]> 2025-04-22 04:54:30 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418887938 Luis https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418888788 2025-04-22 04:54:59 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418888788 Bennett https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418888915 22-12=10

10+10+16=36

5x36x0.5xPI=282.74

282.74+22+12+16+12+22=366.74

A)Ans:36cm

B)Ans:366.74cm2


]]> 2025-04-22 04:55:02 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418888915 Xinming https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418889238 16(a): 22+12=34


16(b): 1/2x34x pi=53.40707511

53.40707511x5=267.0353756

267.0353756+22+12+16+12+22=351.0353756( rounded off to 351.04)


a)Ans: 34cm

b)Ans: 351.04cm

]]> 2025-04-22 04:55:10 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418889238 Javier Q16 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418889467 2019

]]> 2025-04-22 04:55:17 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418889467 ha ry z https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418891467 22-12=10

10+10+16=36

ANS =36cm


]]> 2025-04-22 04:56:20 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418891467 Karine https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418892368 2019 PSLE paper 2


(a) 22cm-16cm=6cm

6cm+6cm+16cm=28 cm

(b)circumference of semicircle : 28xpi=87.96cm (rounded down)

Perimeter of figure : 87.96cmx5=439.8cm

439.8cm+22cm+12cm+16cm+12cm+22cm=523.8 cm


Ans : (a)28cm

(b)523.8cm

]]> 2025-04-22 04:56:52 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418892368 Ames https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418892563 22-16=6

6x6=36

Ans (a) 36cm



1/2 x pi x36=56.548

56.548x5=282.74

282.74+16+22+22+12+12=366.74

Ans 366.74cm




]]> 2025-04-22 04:56:59 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418892563 Evelynn https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418892713 a) 22cm-12cm=10cm

16cm+10cm+10cm=36cm

b) arc 1+arc 2+arc 3+arc 4 =2 circles

Circumference of 2 circles: (pi x 36cm)x2=226.19cm

Perimeter of arc 5: 1/2 x pi x 36cm =56.55cm

Perimeter of figure: 226.19cm+56.55cm+(22cmx2)+(12cmx2)+16cm=366.74cm


Ans: a) 36cm

b) 366.74cm


]]> 2025-04-22 04:57:06 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418892713 Owen https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418892762 (a) 3d+12+12= straight line

2d +22+16+22=straight line

22+16+22=60

Diameter=60-12-12=36

Ans:36cm

(B)36xpi x half= 56.54866776

56.54866776x5=282.7433388

282.7433388+12+22+16+12+22=366.74(rounded)

Ans366.74cm


]]> 2025-04-22 04:57:07 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418892762 Ryan Q16 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418893006 2025-04-22 04:57:16 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418893006 Viaan https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418893035 16cm-12cm=4 cm

22cm+4cm=26 cm

26cm-16cm=10cm

10cmx2+16cm=36cm

Or

20cm+16cm=36cm


Ans:a 36cm

1/2x5=2.5

2.5x pi x 36 is 282.74 to 2dp

282.74cm +22cm+12cm+16cm+12cm+22cm =366.74 cm ans

Ans:b 366.74cm



Ans a 36cm


Ans b 366.74cm

]]> 2025-04-22 04:57:17 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418893035 Kirath question 16 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418893698 (a)22cm-12cm=10 cm

22+10cm=32 cm

Ans(a):32cm

(b)5x1/2x2x11xcalculator pie=172.785

22+12+16+12+22=84

172.785+84=256.785

Ans(b):256.785

]]> 2025-04-22 04:57:37 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418893698 Qonita Q16 PSLE 2019 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418895394 A) 22+12+16+12+22=84

84/2=42

Ans=42


B)1/2x pi x 42 =65.97

65.97 x 5 =329.85

329.85 + 22 +12 +16 +12 + 22=413.85

Ans= 413.85

]]> 2025-04-22 04:58:30 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418895394 by kevin https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418897128 22-12=10

10+10+16=36

A=36cm

1/2x36xpi=56.548

56.548x5=282.74

282.74+22+16+22=342.74

B=342.74



]]> 2025-04-22 04:59:16 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418897128 alexandria grp7 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418898415 22 -16=6 ( 6 is the unknown side, the right one next to the circle with 16cm)

(a) 22+6= 28


(b) calculator pi x 1/2 x 28 =43.982 (circumference of semi circle)

43.982 corrected to 2 d,c is : 43.98

43.98 x 5 (semi) = 219.9

219.9+ 22+12+16+12+22=303.9

a) 28 cm

b) 303.9 cm


]]> 2025-04-22 04:59:54 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418898415 Ilhan Q16 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418898835 Diameter:22-12=10

16+10+10=36


1/2xpix36=56.55

56.55x5=282.75

282.75+22+12+16+12+22=366.75


(A)Ans=36cm

(B)Ans=366.75cm2


]]> 2025-04-22 05:00:08 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418898835 Gideon https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418900684 22-16=6

6x6=36

A)36cm


36/2=18

18xpi=56.548

56.548x5=282.740

282.7+12+12+16+22+22=366.7 4

Ans:366.74cm

]]> 2025-04-22 05:01:04 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418900684 Meghan question 16 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418901343 2025-04-22 05:01:20 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418901343 Samuel https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418901615 A:

22-16=6

6+6+16=28

B:

1/2xpix28=43.982

43.98x5=219.9 1

219.91+22+12+16+12+22=303.91


]]> 2025-04-22 05:01:28 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418901615 Cunrui question 16 paper 2 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418901751 a) 22-12=10

22-12=10

Diameter of each semicircle=16+10+10

=36

a)Ans:36cm


b)Arc of one semicircle=1/2xpix36

=18pi

5 Arcs=18pix5

=90pi

Total perimeter=90pi+22+12+16+12+22

=366.743

Rounded off to 366.74cm

b)Ans:366.74cm



]]> 2025-04-22 05:01:31 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418901751 Cayden https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418902335 2025-04-22 05:01:45 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418902335 Haryz https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418902481 2025-04-22 05:01:48 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418902481 Jing En https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418902500 A) 22-12=6

16+6+6=28

Ans:28cm


B)1/2xpiex28=43.982

43.982 rounded to 43.98

43.98-6-6-16=15.98



]]> 2025-04-22 05:01:49 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418902500 Elizabeth https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418909691 (A)ans:28cm

22-16=6

22+6=28

(B)ans:303.9114858cm

1/2x28xpie=43.98229715

43.98229715x5=219.9114858

219.9114858+22+12+16+12+22=303.9114858cm

]]> 2025-04-22 05:04:42 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3418909691 Mikayla (conclusion) https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437409189 Question 16:

I think I got the question wrong because I could not visualise that the top half is the same as the bottom half.

]]> 2025-05-06 05:03:42 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437409189 Why I got it wrong https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437410942 B) I think it’s calculation errors

]]> 2025-05-06 05:06:03 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437410942 Xinming https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437411296 I did not know how to do as a thought it was equal length, I got A wrong. But I thought and realised it was not equal.

]]> 2025-05-06 05:06:28 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437411296 Danica https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437411435 I could not do the question as I thought the lines were even.

]]> 2025-05-06 05:06:41 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437411435 Why I got it wrong.Asher https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437411449 I could not visualise the semicircles

]]> 2025-05-06 05:06:42 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437411449 Q16 2019 PSLE Paper 2 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437411718 I did not know how to do the question as I had never encountered it before so I tried my best but did not get it right I feel like if I did it again I would be able to get it right.

]]> 2025-05-06 05:07:00 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437411718 alexandria (reflection ) https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437412156 I could not visualise the circles . But after I looked at it, but I still didn’t understand.

So, I went home and now I understand question .




]]> 2025-05-06 05:07:32 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437412156 https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437412316 I got this wrong because l did not visualise it properly

]]> 2025-05-06 05:07:47 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437412316 Emmanuel https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437412324 2019 PSLE Paper 2 Q16

I did not realise the centre line was the same for both sides, but instead I thought it was a 2:3 ratio.

]]> 2025-05-06 05:07:48 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437412324 Viaan https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437412802 I like the way bennet and Xavier solved the question. Their method is more efficient and clear.

]]> 2025-05-06 05:08:18 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437412802 Kirath’s reflection https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437413586 I got it wrong as I think that I could not visualise the semicircles

]]> 2025-05-06 05:08:33 UTC https://padlet.com/ngeeannprimaryschool/kxezxjd2xy86hfdx/wish/3437413586