Adding 100s and 10s to 1s
Reminders & Tips for this worksheet:
- A Reminder: you could warm up with some Addition to 20 without regrouping.
- A Tip: This is really easy - the opposite of "separating", you just join these "guys" together. In fact I would say that you almost don't have anything to add - just join. :-)
Pay attention, please...
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