Q&A - PSLE Math

Academic support for Primary 6 and PSLE
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tianzhu
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Re: Q&A - PSLE Math

Post by tianzhu » Sat Mar 28, 2015 12:25 pm

lulu2014 wrote: 2) Mr Tan has some charity tickets. If he sends 4 tickets each to some companies, he will need another 20 more tickets. However, if he sends 3 tickets each to the same companies, he will have a remainder of 50 tickets. How many tickets does he have?
Hi lulu2014

Good Afternoon.

Here’s an example for a similar question. Please refer to the slide.

When students are able to understand the logic behind the solution, MD might not be necessary.

Another question for your kid to practise.

Miss Lim bought a packet of sweets to distribute to her class. If each child gets 3 sweets, she would be left with 30 sweets. If each child gets 4 sweets, she would need 5 more sweets.
a) How many children are there in the class
b) How many sweets did Miss Lim have at first.

The solution to your question, in order to send the same companies 1 more ticket (4 -3), Mr Tan needs 70 (50+20) charity tickets.

Number of companies ------ 70/1 ------ 70

Number of tickets ----- (70*3) + 50 ----- 260

Best wishes

Hope this helps.

Best wishes

Image

Sruthi
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Re: Q&A - PSLE Math

Post by Sruthi » Sat Mar 28, 2015 3:18 pm

Image pleae help with this question .thx

pecalis
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Re: Q&A - PSLE Math

Post by pecalis » Sat Mar 28, 2015 3:56 pm

Sruthi wrote:Image pleae help with this question .thx
1/4 of C --> 1/3 of J (make numerator the same but it is already the same to begin with]
so, C has 4u and J has 3u to begin with.

Charles: June
= 4u : 3u
-150 : +80
----------------
2p : 5p

Making the parts the same, meaning x5 for Charles and x2 for June,
20u = 6u + 160 + 750
14u = 910,
1u = 65
Answer: Charles had 4u, $260 and June had 3u, $195

This method can be found in Onsponge:)

Sruthi
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Re: Q&A - PSLE Math

Post by Sruthi » Sat Mar 28, 2015 5:13 pm

Image please help with this question.thank you :thankyou:

Sruthi
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Re: Q&A - PSLE Math

Post by Sruthi » Sat Mar 28, 2015 5:51 pm

Image please help with the questions


lulu2014
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Re: Q&A - PSLE Math

Post by lulu2014 » Sat Mar 28, 2015 9:11 pm

can somebody help me with this 2 qns?
i had a hard time understanding. :(

3) Jimmy and Kelly had some cards. In a game, Jimmy lost 1/10 of his cards to Kelly. After Jimmy lost his cards to kelly, the ratio of the number of cards Jimmy had to the number of cards bKelly had was 3:1. The next day, after Jimmy lost more cards to kelly, the ratio became 4:7 and kelly had 72 more cards than Jimmy.
a) what was the ratio of the number of cards jimmy had to the number of cards kelly had?
b) How many cards did kelly win from jimmy altogether?

5) Alex, Boon kheong and Casmuri paid for a meal. Alex paid 1/5 of the amount Boon Kheong and Casmuri paid altogether. Boon Kheong paid 1/4 the amount Alex and Casmuri paid.
a) what fraction of the total cost of the meal did Casmuri pay?
b) if the meal cost $205.20, how much did Alex pay?

Priskhipo
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Re: Q&A - PSLE Math

Post by Priskhipo » Sat Mar 28, 2015 10:22 pm

Image
lulu2014 wrote:can somebody help me with this 2 qns?
i had a hard time understanding. :(

3) Jimmy and Kelly had some cards. In a game, Jimmy lost 1/10 of his cards to Kelly. After Jimmy lost his cards to kelly, the ratio of the number of cards Jimmy had to the number of cards bKelly had was 3:1. The next day, after Jimmy lost more cards to kelly, the ratio became 4:7 and kelly had 72 more cards than Jimmy.
a) what was the ratio of the number of cards jimmy had to the number of cards kelly had?
b) How many cards did kelly win from jimmy altogether?

5) Alex, Boon kheong and Casmuri paid for a meal. Alex paid 1/5 of the amount Boon Kheong and Casmuri paid altogether. Boon Kheong paid 1/4 the amount Alex and Casmuri paid.
a) what fraction of the total cost of the meal did Casmuri pay?
b) if the meal cost $205.20, how much did Alex pay?

Priskhipo
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Re: Q&A - PSLE Math

Post by Priskhipo » Sat Mar 28, 2015 10:28 pm

Sruthi wrote:Image please help with the questions
The student had read the time on the left clock wrongly. It should be 2 pm not 12.10 pm.

From 2 pm to 3.15 pm the long hand moved 1 and 1/4 circles.
So altogether there are 5 right angles.

Priskhipo
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Re: Q&A - PSLE Math

Post by Priskhipo » Sat Mar 28, 2015 10:43 pm

Image
Sruthi wrote:Image please help with this question.thank you :thankyou:

lulu2014
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Re: Q&A - PSLE Math

Post by lulu2014 » Sat Mar 28, 2015 11:04 pm

thanks for your help.. ^_^ priskhippo.

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