Category Archives: Problem solving

Sarin and his coin bank part 48 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills of dealing with the Math Modeling, the Math problem solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Fraction and Problem Solving.

You can read the posting on Sarin and his coin bank for the story of coin bank.

Read also the posting on Sarin learns the concept of Fraction (mathematics concept) to understand Fraction.

Challenge yourself with the Question before look out for the given solution‼!

Upper primary school mathematics question UPQ493

Sarin has 36 coins in the coin bank. 5/12 of them are twenty-cent coin and the rest are fifty-cent coins. How much money does Sarin have in the coin bank?

…Click to know the solution…

Sarin’s family attend concert at the Esplanade Part 27 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn how to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level. This posting is an upper primary school math question on Ratio and Problem Sum.

The story on Sarin’s family attend concert at the Esplanade you can read postings on Sarin’s family attend concert at the Esplanade in Welcome category and Sarin’s family attend concert at the Esplanade Part 2 (Math Question).

You should read also the posting on Sarin learns concept of ratio in school to understand mathematics concept of Ratio.

Upper primary school mathematics question UPQ492

In the Esplanade Library, the ratio of the number of men to the number of women at was 2 : 3. After some time, 60 more men came and 30 women left. In the end, there were 20 more women than men. Find the number of women at the Esplanade Library in the end.

…Click here to go to the solution…

Fatimah and Hairu enjoy Congkak game part 29 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can aquire the skills of dealing with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on PercentageFraction, Ratio and Problem Sum.

Read the posting on Fatimah and Hairu play Congkak to know about Congkak game.

Read the posting on Sarin learns Average Number, Percentage and Charting in school (Math Concept) to know about Percentage.

Read the posting on Sarin learns the concept of Fraction (mathematics concept) to understand Fraction and Portion.

Read also the posting on Sarin learns the concept of Ratio (mathematics concept) to understand Ratio.

Challenge yourself with the question before look for the given solution‼!

Upper primary school mathematics question UPQ490

Fatimah and Hairu played a CongKak game using. At first, 25% of the number of marbles that Fatimah had was 1/3 of the number of marbles that Hairu had. In the first round, Fatimah lost 65 of her marbles to Hairu. In the second round, Hairu lost 30 of his marbles to Fatimah. After the game, they had the same number of marbles.

(a) How many marbles did Fatimah have at first?

(b) How many marbles did Hairu have in the end?

…Click here to read the solution…

Sarin participates in school anniversary event part 25 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Problem Solving.

Read the posting on Sarin participates in school anniversary event part 1 for story on school anniversary.

Challenge yourself with the question before look out for the given solution‼

Upper primary school mathematics question UPQ486

To prepare for the school anniversary event, Sarin spent a total of $69 on some rulers, pens and erasers. 25% of them were rulers and cost 90₵ each. The number of pens was 6 more than half the total number of items and the remaining were erasers. If a pen cost $2.20 and an eraser cost 70₵, find the total number of pens Sarin bought.

…Click to read the solution…

Fatimah and Hairu enjoy Congkak game part 28 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can aquire the skills of dealing with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on PercentageRatio and Problem Sum.

Read the posting on Fatimah and Hairu play Congkak to know about Congkak game.

Read the posting on Sarin learns Average Number, Percentage and Charting in school (Math Concept) to know about Percentage.

Read also the posting on Sarin learns the concept of Ratio (mathematics concept) to understand Ratio.

Challenge yourself with the question before look for the given solution‼!

Upper primary school mathematics question UPQ485

In a CongKak Game, Fatimah had 80% as many marbles as Hairu at the start of the game. Fatimah lost 75% of her marbles to Hairu during the first game. Hairu then lost 25% of his marbles to Fatimah during the second game. If Fatimah had 258 marbles at the end of the second game, how many marbles did Hairu have at first? Who won the CongKak Game?

…Click here to read the solution…

Sarin and his coin bank part 47 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills of dealing with the Math Modeling, the Math problem solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Fraction, Percentage, Ratio and Problem Solving.

You can read the posting on Sarin and his coin bank for the story of coin bank.

Read the posting on Sarin learns concept of ratio in school to understand Ratio.

Read also the posting on Sarin learns the concept of Fraction (mathematics concept) to understand Fraction.

Read the posting on Sarin learns Average Number, Percentage and and Charting in school (Math Concept) to understand the concept of Percentage.

Challenge yourself with the Question before look out for the given solution‼!

Upper primary school mathematics question UPQ484

At first, 25% of Sarin’s money in his coin bank was the same as 1/3 of Hairu’s money in his coin bank. Father gave Hairu another $80 while Sarin spent $150 on some books. In the end, Hairu had 2 ½ times as much money in his coin bank as Sarin had in his coin bank.

(a)        How much money did Sarin have in his coin bank at first?

(b)        How much money did Hairu have in his coin bank in the end?

…Click to know the solution…

Sarin’s family and The Great Singapore Sale Part 13 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can acquire the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Problem Solving.

Read the posting on Sarin’s family and The Great Singapore Sale in the Welcome category for the story.

Challenge yourself with the question before look out for the given solution‼

Upper primary school mathematics question UPQ483

During the sale, a florist sold thrice as many roses as orchids and collected $703 in total. She collected $437 more for the roses than the orchids. Given that a stalk of rose cost $1.50 more than a stalk of orchid, find the cost of a stalk of orchid.

….Click here to view the solution….

Sarin’s family attend concert at the Esplanade Part 26 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn how to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level. This posting is an upper primary school math question on RatioFraction and Problem Sum.

The story on Sarin’s family attend concert at the Esplanade you can read postings on Sarin’s family attend concert at the Esplanade in Welcome category and Sarin’s family attend concert at the Esplanade Part 2 (Math Question).

You should click and read the posting on Sarin learns the concept of Fraction (mathematics concept) to understand Portion or Fraction.

You should read also the posting on Sarin learns concept of ratio in school to understand mathematics concept of Ratio.

Upper primary school mathematics question UPQ482

In the Esplanade concert hall, there were 4/5 as many boys as girls and 2/3 as many adults as children. There were 120 more adults than boys.

            (a)        How many people were there in the Esplande concert hall?

            (b)        What fraction of the people in the Esplande concert hall were children?

…Click here to go to the solution…

A family in Singapore part 53 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids will able to acquire knowledge of dealing with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Ratio and Problem Sum.

You can click here and read the posting  A family in Singapore about Sarin’s family.

Read also the posting on Sarin learns the concept of Ratio in School (mathematics concept) to understand the concept of Ratio.

Challenge yourself with the question before look for the given solution‼!

Upper primary school mathematics question UPQ480

The ratio of the mass of Sarin to the mass of Fatimah is 5 : 3. The ratio of the mass of Hairu to the mass of Fatimah is 5 : 4. Hairu weighs 30 kg, what is the mass of Sarin?

…You can click here to read the solution…

Sarin participates in school anniversary event part 24 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Problem Solving.

Read the posting on Sarin participates in school anniversary event part 1 for story on school anniversary.

Challenge yourself with the question before look out for the given solution‼

Upper primary school mathematics question UPQ479

There are 72 pupils in Sarin team. He divides his team into two groups to work on the school anniversary dinner event. Each group is made up of 2 or 6 pupils. If the numbers of groups of 2 and 6 pupils are the same, how many groups are there altogether?

…Click to read the solution…