Friday 13 January 2017

How many times?


On a digital 24 hour clock, at certain times, all the digits are consecutive (in counting order). You can count forwards or backwards. Look at the example below.

How many times like this are there between midnight and 7:00?
How many are there between 7:00 and midday?
How many are there between midday and midnight?

7 comments:

  1. 4.56
    7.89
    10.11

    ReplyDelete
    Replies
    1. Well done Akeemat, you have found one between midnight and one between 7:00 and midday. There are several others, can you think of them?

      Also, have a look at your 7:89 time. Can you explain why this is wrong?

      Delete
  2. i think their are 3 ways to do the first question number 1 is 1.23 number 2 is 4.56 and the last one is 3.45.

    ReplyDelete
    Replies
    1. Well done Najia, you have found some times to answer this question. But there are several others. Can you find them all?

      Delete
  3. when the numbers are in consecutive order it means that they are not in order like 1.23 and 4.56 these are cosecutive numbers

    ReplyDelete
  4. 1.23
    4.56
    MIDNIGHT 0.00 PM
    MIDDAY 12.00 am

    ReplyDelete
  5. A consecutive number is when a number is not in order like 1.25 and 4.56 these are consecutive numbers

    ReplyDelete