How would the decimals work? 47 / 12 = 3.9

Home Community Questions & Answers Mental Math Q & A How would the decimals work? 47 / 12 = 3.9

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • #5055
    Mohammad
    Participant
    • Topics: 1
    • Replies: 0

    In this case:

    47; 4 + 7 = 11 = 1 + 1 = 2

    12 = 1 + 2 = 3

    3.9 = 3?

    Therefore we get; 2 / 3 = 3?

    #5057
    Ofpad
    Participant
    • Topics: 0
    • Replies: 158

    Hi

    The DS Method for division with reminder works a little bit differently. You need to convert the decimal to a reminder.

    47 / 12

    Quotient 3

    Reminder 11

    This can be written like the following.

    Dividend = Divisor x Quotient + Reminder

    47 = 12 x 3 + 11

    DS is the following:

    2 = 3 x 3 + 2

    2 = 2

    There is a method to check answers with the decimals. I will be adding an additional lecture for that in a couple of weeks. Until then please use this method instead.

Viewing 2 posts - 1 through 2 (of 2 total)
  • You must be logged in to reply to this topic.