Today I have two versions of a game designed to help students understand how the position of a digit in a number changes its value. In each version of the game students roll dice and determine whether the numbers rolled will be used to make tens or ones. The goal is to be the player closest to 100 at the end of five rounds.

Here are a few pictures.

This activity meets the following Common Core Standards for Math.

1.NBT.2 - Understand that the two digits of a two-digit number represent amounts of tens and ones.

1.NBT.4 - Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

Here are a few pictures.

This activity meets the following Common Core Standards for Math.

1.NBT.2 - Understand that the two digits of a two-digit number represent amounts of tens and ones.

1.NBT.4 - Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

I hope you get a chance to use these in your home or classroom. Please let me know if you try these and how they work!

Fun idea, thanks for sharing!

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