MENTAL MATH EXERCISE

 Write each of the following on a separate index card and distribute to the class in any order.  Choose any student to begin by reading his card.  Students will respond according to the card each one has.  The round is over when it gets back to the student who began.

I have 7. Who has the sum of 5 and that number?
I have 12. Who has that minus 8?
I have 4. Who has 8 times that?
I have 32. Who has 1 more than that?
I have 33. Who has that times 2?
I have 66. Who has 3 less than that?
I have 63. Who has that divided by 7?
I have 9. Who has one less than twice that?
I have 17. Who has that decreased by 4?
I have 13. Who has that multiplied by 3?
I have 39. Who has the difference in that number and 3?
I have 36. Who has half that?
I have 18. Who has that divided by 9?
I have 2. Who has that increased by 5?