Purpose:
To use place value
and subtraction.
Game Objective:
To remove one
digit from the display without changing any of the other digits.
Instructions:
- One person gives the number which all players enter into their calculators. The same person says which digit is to be removed.
- Good numbers are those that have a pattern, so people can tell easily if any digit but the selected one has changed.
Example:
In the display
876543, wipe out 7 without changing any other digit. This is done by subtracting one number on the
display. So key in “-“ then the number
to be subtracted and press =. Does the
display read 806543? Players can take
turns giving numbers to each other and selecting the digit to be wiped out.
Variation:
For beginners,
limit the display to three digits.
For more advance
mathematicians, put decimals into the display. Eg. Wipe out the 8 in 0.567891
