Make it easier
Cut the game board off at square 50. The game will be shorter.

Make it harder
Start at square 100, throw the dice, and count down or subtract. First one to get
past 1 is the winner.

Use 2 dice for the game. The numbers to count and add or subtract will be bigger.

Use 2 dice of different colours. Each player throws both dice, and moves the game
piece forward the number on the white dice and backward the number on the red
dice.

Model higher math skills
Think out loud as you play your turn. Here are some examples.

• If the child is at the level of counting out every play, you might say, “I’m on square 22 and I threw a 5. 2 + 5 is 7. I think I’ll land on square 27. Let’s see. I’ll count 1, 2, 3, 4, 5—and look where I am. I was right!” (And you could be wrong, sometimes, too.)
  
  
  
• If the child can do some adding, but has a hard time with the bigger numbers, show him some strategies by thinking out loud on your turn. Some examples:
  
  
  • “I’m on square 29 and I threw 11. Let’s see. First I’ll add the 10. That makes 39. Then I’ll add the 1. That’s 40. So let me check. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10—that’s 39 and 1 more is 40. I was right!”
    
    
  • “I’m on square 47 and I threw a 9. Let’s see. I’ll add 10 and subtract 1, and that should be the same as adding 9. Okay, 47 plus 10 is 57, subtract 1 is 56. So let me check. I’ll count up. 1, 2, 3, 4, 5, 6, 7, 8, 9—and here I am at 56. I was right!