All Junior Cert Mathematics posts
  • avatar image

    help with orders of magnitude question aoife098

    by how many orders of magnitude does 1470000000 differ from 8340

    show workings please

    thanks for whoever answers question

    1. avatar image


      I think its 1.47 x10 to the power of 9 and 8.34 to the power of 3. im not sure if this is right though sorry

    2. avatar image


      5 orders of magnitude

    3. avatar image


      could you please tell me how its 5?

    4. avatar image


      Orders of magnitude? I don't think we studied this

    5. avatar image


      It is 6 orders of magnitude

      1470000000= 1.47 x 10(to the power of 9)

      8340= 0.834 x 10(to the power of 4)

      9 - 4 = 5 :)

      How I rounded up..?

      the number has to be between I and 10 ughh it is confusing to explain I will only confuse you soz

    6. avatar image


      sorry imeant 5, 5 orders of magnitude:)

    7. avatar image


      1470000000 is nearer to 1,000,000,000 than to 10,000,000,000 so has an order of magnitude of 9.

      8340 is nearer to 10,000 than 1000 so has an order of magnitude of 4.

      The difference is 9-4=5

      Hope that helps

    8. avatar image


      When you don't even know what orders of magnitude are

    9. avatar image


      Order of magnitude is a number to the nearest 10, 100, 1000 etc order 1, 2, ,3 respectively

    10. avatar image


      Unlikely to come up so don't stress

    11. avatar image


      Can someone please explain what this question even is?

    12. avatar image


      Higher level maths

      Order of magnitude estimates how big one number is in comparison to another

    13. avatar image


      why don't you leave it as 8.340 instead of 0.8340? sorry im so confused haha

    14. avatar image


      When did this question come up last?

    15. avatar image


      I don't think it did. It's on crriculum but only came up on sample papers I think Aoife.

      Sarah 0.834 is incorrect scientific notation. 8.34. X 10^3 is correct then round up as 8>5 so 4 orders of magnitude.

    16. avatar image


      a question about comparing the radii of pluto and earth using orders of magnitude came up on my mocks

    17. avatar image


      @MM97 I left 8.34 as it is but others wrote it as 0.834 . do you move the decimal place left or right? would it not be 10^2 ?

    18. avatar image


      It's to the left if the ten's power is negative, and to the right if it's positive

    19. avatar image


      ok thank you!

    20. avatar image


      Share files from your computer