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Math Games
With Jane and Joanne

What's Your Number?



Grades 4 - 6


  • 4-digit place value
  • decimal place value


  • 3 or more



The goal of this game is to create the largest number possible.

Each player needs to make a chart that looks like the "What's Your Number" printable chart. Alternatively, you can print the chart out and hand it out to students.

Place the deck of cards face down in the middle of the playing area.

Player 1 draws a card from the deck and places it face up. All players must write this number down on their gameboard. Players may choose any place value position on their board.

Players draw five or more cards, one at a time, and fill in their boards; they choose what they believe to be the best possible place-value position for each number. Once players write a number on their grids that number cannot be erased.

At the end of the round, the player with the largest number earns 10 points.

  • Player 1 uses the cards drawn to create the number 9,652.41
  • Player 2 uses the cards drawn to create the number 9,564.21
  • Player 1 has the larger number. She wins the round and earns 10 points.
Play until one player achieves 100 points.
Joanne Currah and Jane Felling have created two best-selling math game books -- Shuffling Into Math (for teachers of grades K-3) and All Hands on Deck (grades 1-9). Each book includes simple instructions for more than 100 math games that help children discover math concepts and reinforce math skills. Education World is pleased to present a selection of those activities in this series.

Click to learn more about these books and other exciting products and service from Joanne and Jane's Box Cars and One-Eyed Jacks.

More About Box Cars and One-Eyed Jacks

Joanne Currah and Jane Felling created their company, BOX CARS & ONE-EYED JACKS, for the sole purpose of making math fun -- not threatening or frustrating -- for children. Joanne and Jane spend many days each year on the road as they train teachers to make math fun for kids and run Family Math Nights at schools. To learn more about the authors, their books, and the services they provide, visit them at or email them at [email protected].

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