Sarin learns rate of change in school Part 1 (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 Fraction, Volume and Flow Rate.

Read the posting on Sarin learns rate of change in school (Math Concept) to learn about concept of speed and relative speed.

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

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

Upper primary school mathematics question UPQ193

Sarin is filling up a tank of water from a tap. The water flows from the tap at a rate of 4 l per minute into a tank measuring 60 cm by 20 cm by 30 cm. How long will it take to fill up 2/3 of the tank?

Solution:

                        The total volume of the tank = 60 × 20 × 30 = 36000 cm3 = 36 l

                        To fill 2/3 of the tank

                        Draw the volume model

                           From the above model

                        3 units = 36

                        1 unit = 12 l

                        The volume of water to fill = 12 × 2 = 24 l

                        The flow rate of water is 4 l per minute

                        The time require to fill 2/3 of the tank = 24 ÷ 4 = 6 min

More Questions on Flow Rate. Click here…

More Questions on Fraction. Click here…

More Questions on Volume. Click here…

More Questions on Problem Sum. Click here….

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3 responses »

  1. Hello! This post couldn’t be written any better! Reading through this post reminds me of my old room mate! He always kept chatting about this. I will forward this article to him. Pretty sure he will have a good read. Thanks for sharing!

  2. Have you ever considered publishing an e-book or guest authoring on other blogs? I have a blog based on the same topics you discuss and would love to have you share some stories/information. I know my audience would value your work. If you’re even remotely interested, feel free to send me an e mail.

    • Sorry for not reply you for quite some time. I am busy to get more content in the blog. It sound interesring on publishing an e-book, you might give me some light on how to go about it. You can e-mail to me.

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