2020 PSLE Discussions and Strategies(for those born in 2008)

[sywtj]

Chloeeeeee\" post_id=\"1997403\" time=\"1601777234\" user_id=\"188699:

There was a circles question in the psle something about circles and finding the perimeter of the shaded part? Does anybody have an ans to this? Thanks

i remember b) to be 1156.2cm2

[Chloeeeeee]

What abt the part a

[Apollo199999999]

Chloeeeeee\" post_id=\"1997407\" time=\"1601779721\" user_id=\"188699:

What abt the part a

I think it's 47.1

[Apollo199999999]

sywtj\" post_id=\"1997405\" time=\"1601779258\" user_id=\"188688:

Chloeeeeee\" post_id=\"1997403\" time=\"1601777234\" user_id=\"188699:

There was a circles question in the psle something about circles and finding the perimeter of the shaded part? Does anybody have an ans to this? Thanks

i remember b) to be 1156.2cm2

I thought it was 1156.5

[Fastblade]

Apollo199999999\" post_id=\"1997419\" time=\"1601786961\" user_id=\"188717:

sywtj\" post_id=\"1997405\" time=\"1601779258\" user_id=\"188688:

[quote=Chloeeeeee post_id=1997403 time=1601777234 user_id=188699]There was a circles question in the psle something about circles and finding the perimeter of the shaded part? Does anybody have an ans to this? Thanks

i remember b) to be 1156.2cm2

I thought it was 1156.5[/quote]

It is 1156.5

[stick]

for the ring question I put

1.33 or 32cm
2. 24 (confirm wrong) :

[Apollo199999999]

[youtube=][/youtube]

stick\" post_id=\"1997423\" time=\"1601790939\" user_id=\"188729:

for the ring question I put
1.33 or 32cm
2. 24 (confirm wrong) :

Ring Qn is a. 30cm and b. 28

[xiaomingiconic]

Apollo199999999\" post_id=\"1997404\" time=\"1601777431\" user_id=\"188717:

xiaomingiconic\" post_id=\"1997391\" time=\"1601771330\" user_id=\"188698:

[quote=Apollo199999999 post_id=1997388 time=1601769245 user_id=188717]:lightrod:

Pls help

uhhh i think the answer is 64 as many people say 64 but i also don’t know because i left it blank 🤡

No like what was the question[/quote]ohh, the qn was:
lucy had an equal number of gold and silver stars. she gave 26 gold stars and 14 gold stars to maggie and the rest to nick. for every 1 gold starnick got, he got 3 silver stars. how many stars did lucy have at first or how many did lucy have each (i can’t remember what they asked for)

[_E.022613K_]

xiaomingiconic\" post_id=\"1997436\" time=\"1601795123\" user_id=\"188698:

Apollo199999999\" post_id=\"1997404\" time=\"1601777431\" user_id=\"188717:

[quote=xiaomingiconic post_id=1997391 time=1601771330 user_id=188698]

uhhh i think the answer is 64 as many people say 64 but i also don’t know because i left it blank 🤡

No like what was the question

ohh, the qn was:
Lucy had an EQUAL NUMBER OF GOLD AND SILVER STARS. She gave 26 gold stars and 14 silver stars to maggie and the rest to Nick. for every 1 gold star Nick got, he got 3 silver stars. How many stars did Lucy have at first?[/quote]The correct answer should be 64.
Explanation:
26-14=12 → there was (1U + 12) silver stars and (1U) gold stars.
3-1=2 → difference in each
12÷2=6 → no. of groups
6×1+26= 32 → no.of gold stars in total
32×2=64 → Total no. Of stars
CHECK:
3×6+14=32 → no.of silver stars in total

[tutormum]

xiaomingiconic\" post_id=\"1997237\" time=\"1601644245\" user_id=\"188698:

yummers\" post_id=\"1997015\" time=\"1601616869\" user_id=\"188678:

My friend said that the question asked for possible numbers, but I only put 90. He could be wrong, but can I still get one mark if that is the case?

idk, maybe he could because his method should've been correct if he got 90 but the answer is actually 89 and 90 because in one group of stars and hearts there are 3 stars and 2 hearts and the heart is last, and they said that there were 135 stars, so yeah 90 is right but then there also could be 89 too, because even if you minus that last heart you'd still get 135 stars and so you're supposed to write 89 and 90
plus they said what are the possible answerS ... i put 90 only and now i know my mistake

I understood that the question was \"Find the possible numbers of hearts in that piece of tape.\" Most students would use number pattern to solve and get 90 while only a handful would know that the last heart is not necessary to be included in the tape. This is a trick question but IMHO I believe that giving 90 as the only answer would get half the mark to be fair to majority of the students cos at least they got one of the possible number correct.