Category Archives: Decimal numbers

Sarin learns Perimeter, Area and Volume in school part 44 (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. You or your kids can learn dealing with Math modeling, Problem Sum from Lower Primary School to Upper Primary School level in Singapore school. This posting is a primary school math question on perimeter, fraction and decimal number.

You can read posting Sarin learns Perimeter, Area and Volume in school(Math Concept) to learn the concept of perimeter, area and volume.

Read also the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes and the posting on Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles. As well as reading the posting on Sarin and the million numbers (Math concept) on decimal number.

You can click and read also the posting on Sarin learns Concept of Fraction in school to learn about Portion or Fraction and read the posting on Sarin learns concept of ratio in school to understand mathematics concept of Ratio..

Upper primary school mathematics question UPQ156

AB and CD are diameters of a bigger circle. EF and GH are diameters of a smaller circle. O is the centre for both circles. Find the perimeter of the figure. Round off the answer to 1 decimal place. (Use  π = 3.14159)

…Click here to read the solution…

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Sarin learns Perimeter, Area and Volume in school part 43 (Math Question)

Standard

The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. You or your kids can learn dealing with Math modeling, Problem Sum from Lower Primary School to Upper Primary School level in Singapore school. This posting is a primary school math question on perimeter, fraction and decimal number.

You can read posting Sarin learns Perimeter, Area and Volume in school(Math Concept) to learn the concept of perimeter, area and volume.

Read also the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes and the posting on Sarin and the million numbers to know about decimal number.

Read Also the posting on Sarin learns Concept of Fraction in school to learn about Fraction.

Upper primary school mathematics question UPQ155

The figure shows a circle of radius 56 cm. Find the perimeter of the shaded part of the figure? Give your answer correct to 1 decimal place. (π = 3.14159)

 

 

…Click here to read the solution…

Sarin and his coin bank part 9(Math Question)

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

Read also postings on Sarin and the million numbers to understand concept of dollars and cents.

Upper primary school mathematics question UPQ76

 

Sarin has a total of 195 fifty-cent, ten-cent and five-cent coins in his coin bank. There are13 more ten-cent coins than fifty-cent coins. The number of five-cent coins is twice the total number of fifty-cent and ten-cent coins. What was the total amount of all these coins in his coin bank?

…Click to know the solution…

Sarin and his coin bank part 8(Math Question)

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

Read also postings on Sarin and the million numbers to understand concept of dollars and cents.

Lower primary school mathematics question LPQ17

The diagram shows the amount of money that Sarin has in the coin bank.

 

 

 

 

 

 

He decided to exchange them to $2 notes. How many will he get?

…Click to know the solution…

Sarin and his coin bank part 7(Math Question)

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

Read also postings on Sarin and the million numbers to understand concept of dollars and cents.

Lower primary school mathematics question LPQ16

Sarin had a five dollar note, 4 fifty-cent coins and some twenty-cent coins. If he had $9.60 altogether, how many twenty-cent coins did he has?

…Click to know the solution…

Sarin and his coin bank part5(Math Question)

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You can read posting Sarin and his coin bank on the story of coin bank. Read also posting on Sarin and the million numbers to understand concept of dollars.

Lower primary school mathematics question LPQ12

Sarin had twenty 50-cent coins in his coin bank. He bought a notebook for $2.90 and two erasers at 80 cents each. How many 50-cent coins did he have left?

…click here to go to solution…

Sarin and his coin bank part 1 (Math Question)

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You can read posting Sarin and his coin bank on the story of coin bank. Read also postings on Sarin and the million numbers to understand concept of dollars and cents and Sarin learns the concept of Fraction (mathematics concept) on concept of fraction.

Upper primary school mathematics question UPQ25

Sarin has 279 coins in his coin bank. 3/5 of them are 20-cent coins and the rest are 50-cent coins. He spent 1/3 of the 50-cent coins on a book. How much did the book cost?

…click here to go to solution…

Sarin and the million numbers part 8(Math Question)

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Read posting Sarin and the million numbers and Hairu and the numbers to understand the mathematics concept of numbers.

Read also posting on Sarin learns concept of ratio in school and Sarin learns the concept of Fraction (mathematics concept) to understand Ratio and Fraction.

Upper primary school mathematics question UPQ22

UPQ22-1. Express 400 cents as a ratio of $20.

                  (1) 1 : 5

                  (2) 2 : 1

                  (3) 5 : 1

                  (4) 20: 1

UPQ22-2. Which of the following is equivalent to 8%?

                  (1) 1/8

                  (2) 0.8

                  (3) 0.08

                  (4) 80/100

UPQ22-3. Find the value of 4 5/8 + 1 3/4.

                  (1) 5 1/4

                  (2) 5 3/8

                  (3) 5 2/3

                  (4) 6 3/8

UPQ22-4. Which one of the following is the same as 3/7 ÷ 4?

                  (1) 3/7 × 1/4

                  (2) 7/3 × 1/4

                  (3) 4 x 3/7

                  (4) 4 x 7/3

…Click to read the solution…

Sarin and the million numbers part 3(Math Question)

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Read posting Sarin and the million numbers and Hairu and the numbers to understand the mathematics concept of numbers.

Read also posting on Sarin learns concept of ratio in school and Sarin learns the concept of Fraction (mathematics concept) to understand Ratio and Fraction.

Upper primary school mathematics question UPQ17

UPQ17-1. Find the value of 7/10 + 1/5

UPQ17-2. Express 0.04 as a fraction in its simplest form.

UPQ17-3. 10 children share 6 pizzas equally. Each child gets ______________ pizza.

…Click to see the solution…

Sarin and the million numbers part 2(Math Question)

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Read posting Sarin and the million numbers and Hairu and the numbers to understand the mathematics concept of numbers.

Upper primary school mathematics question UPQ16

UPQ16-1. Fill in the correct fraction on the line.

                 7.801 = 7 +8/10 + _______

UPQ16-2. Arrange these numbers from the largest to the smallest. 0.208, 0.082, 0.802

UPQ16-3. A file and 3 markers cost $11.25. The file cost twice as much as a marker. Find the cost of 4 files.

…Click to see the solution…