35

40

60

85

16

121

77

325

75

84

48

36

120

450

225

270

90

360

150

25

24

32

55

175

144

Player 1

Player 2

ROUND 1

ROUND 2

ROUND 3

ROUND 4

ROUND 5

TOTAL

Greatest Common Factor (GCF) Game

2 players

Need colored markers, paper and pencil to record scores for each player.

Directions

  1. Player 1 chooses an unused number on the grid for player 2 (mark an x through the number after it is used)
  2. Player 2 then chooses another unused  number on the grid.
  3. Player 2 finds the GCF of the 2 numbers and that is player 2’s score.
  4. Switch turns
  5. The winner is the player with the greatest cumulative score after 5 rounds.