Cathy
keiko
24
8. in the following factor game, some of the scores
are missing on the tally sheet.
a. in round 1, cathy chose 24. keiko scored
36 points. make a game board. mark
cathy's choice and keiko's factors.
21
b. in round 2, it is keiko's turn. cathy scored
21 points. what number did keiko pick?
c. in round 3, it is cathy's turn. keiko scored 9 points.
what number might cathy have picked?
d. in round 4, it is keiko's turn. keiko chose 30.
what did cathy score?
e. in round 5, it is cathy's turn. what is cathy's best move?
explain your choice.