Post Class - Decimal Pyramids


Instructions

    Information

  • There are 40 questions on this question paper.
  • Each question carries one mark.
  • Dedicate no more than 20 minutes to each section
  • The answers are to be written in lowercase
  • The test duration is 60 minutes
  • Complete answering questions from all 3 Sections before clicking on the Submit button

    Supported Devices
  • are fully supported.
  • Mobiles are partially supported (landscape mode only), for best exam taking experience please consider using a PC or a laptop.


Read to understand

Questions

Look at the picture below. This kind of arrangement of numbers is called a number pyramid. Can you find out any pattern to it?



Yes, the sum of any 2 adjacent numbers is the number above it. 43 is made up of 20 and 23, 20 is made up of 12 and 8, 23 is made up of 8 and 15, and so on and on. This pyramid has 5 rows to it.


We will add a twist to it and make decimal number pyramids instead of just whole numbers.


Example:

Observe how the rule still holds true. 




Task statement

Questions

The challenge in this home work is to create following decimal pyramids with decimal numbers of your choice:


  1. Two 3 step pyramids
  2. Two 5 step pyramids

Once, you have made the decimal pyramids, erase few of the numbers from it and challenge your partner to solve it. Similarly, you will be solving the unfilled decimal pyramids given to you by your partner.


Outline your strategy of making the decimal pyramids. Which numbers are you putting first: the bottom row, the top most number or some number in middle? How are you erasing numbers to create a solvable problem? Which numbers if erased will make the problem unsolvable?


Did you observe any patterns? Record them in your notebook and discuss it in the class.




Submit

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