This activity comes from the Miquon math curriculum. It's a great way for kids to consolidate their knowledge of our number system, to think critically, and expand their understanding of numbers. Encourage your kids to be as creative (or CRAZY) as possible when they do this. Creating more complex problems will develop their math skills tremendously!
This would also be a good activity to do in small groups so the children can have discussion about their ideas and learn from each other.
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