Q&A - PSLE Math

[Essential]

Please help my boy with the below question:-


Adam , Benjamin and carina had a total of $845. They went shopping and Adam spent 30% of his share, Benjamin spent $100 and Carina spent twice as much as Adam spent. Given that the three of them had $385 left, how much money did Benjamin and Carina have altogether at first?

[tianzhu]

Essential:

Please help my boy with the below question:-


Adam , Benjamin and carina had a total of $845. They went shopping and Adam spent 30% of his share, Benjamin spent $100 and Carina spent twice as much as Adam spent. Given that the three of them had $385 left, how much money did Benjamin and Carina have altogether at first?

Hi

You may use MD.

spent
Adam ----- 3 units
Carina ------ 6 units
Benjamin ------ 100

845 – 385 ------ 460

9 units + 100 ------- 460
1 unit ------ 40

Adam ------- 10 units ------- 400 (Adam’s money at first)

845 – 400 ------ 445 (Amount Benjamin and Carina had altogether at first)

Best wishes

[Essential]

tianzhu:

Essential:

Please help my boy with the below question:-


Adam , Benjamin and carina had a total of $845. They went shopping and Adam spent 30% of his share, Benjamin spent $100 and Carina spent twice as much as Adam spent. Given that the three of them had $385 left, how much money did Benjamin and Carina have altogether at first?

Hi

You may use MD.

spent
Adam ----- 3 units
Carina ------ 6 units
Benjamin ------ 100

845 – 385 ------ 460

9 units + 100 ------- 460
1 unit ------ 40

Adam ------- 10 units ------- 400 (Adam’s money at first)

845 – 400 ------ 445 (Amount Benjamin and Carina had altogether at first)

Best wishes

Thanks Tianzhu. Always trouble u pei sei

[peggy]

Tianzhu,


Thanks for solving my speed questions.

[tianzhu]

Essential:

Thanks Tianzhu. Always trouble u pei sei

Hi

Good Morning.

You're welcome.

Best wishes

[tianzhu]

peggy:

Tianzhu,


Thanks for solving my speed questions.

Hi

Good Morning.

You're welcome.

Best wishes

[Chenonceau]

tianzhu:

Chenonceau:

My Question 1

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Please help... Thank you.

Hi

Where is this question from? It’s quite an interesting one.

:thankyou: tianzhu and zack7 for helping with this question... This question is from P6 Singapore Hokkien Huay Kuan 5-School Combined Prelim Exam.

[tianzhu]

Hi


The topic on Speed in PSLE Maths might be intimidating to some students. Speed questions come in different forms and sometimes can be confusing.

This question posted earlier by peggy requires students to understand the relationship between the length of tunnel and the length of the train.

1. At 9.30am, Train One which was 200m long, pulled out of Station X and travelled towards Station Y at a uniform speed of 80km/h. Half an hour later, Train Two which was 150m long, left Town Y and travelled towards Town X at a uniform speed of 90 km/h.

A) How far Train One travelled when Train Two left Station Y?
B) The two trains met each other of the tunnel. Both trains took 15mins to completely come out of the tunnel. Calculate the length of the tunnel.

I’ll use an earlier question in this thread as an illustration. The question may be tweaked by using bridge, platform instead of tunnel.

A 200m long MRT train took 20 min to pass through a tunnel completely. If the MRT train travelled at an average speed of 120m/min, find the length of the tunnel.

I hope current PSLE students will find it useful.

Best wishes

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[jtparent]

Hi,


Pse assist.

Question: I have 38 notes in my wallet. Some of them are $10 notes. The rest are $2 notes. The total value of these notes is $228.
A) how many $10 notes are there in my wallet?
B) find the difference between the total value of the $10 and $2 notes.

TIA

[YumYum]

Hi, can anyone pls help with this Qn:


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