Subitize to 100 2-3

Use quick images to develop number sense, build confidence, and lay the foundation for place-value. Start with ten frames. Progress to base 10 blocks and discs. Subitize how many in all, and how many more make the next multiple of 10 – the key to using the all-important Make 10s strategy to add.

 
 

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In this video, we are going to practice problems using models

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