PROJECT –FUN ACTIVITY
Ask a friend to choose any 3 x 3 grid on a calendar month and draw a box around it.
Tell your friend that you can instantly give the total of all the nine numbers in the box. This is how you do it.
Take the smallest number in the square and add 8 to it. In this example, 9 + 8 = 17
Multiply that answer by nine. So 17 x 9 = 153
Ask your numbers friend to check by actually taking the total of all nine numbers.
9 + 10 + 11 + 16 + 17 + 18+ 23 + 24 + 25 = 153
Try this out with another box of nine numbers.
This works for any month of any year.
No comments:
Post a Comment