Math for Thursday: Add or subtract? Pages 421-422
Adding joins groups to make bigger group.
Subtraction takes away to leave a smaller group.
Thursday March 19, 2026 https://youtu.be/lEEN3IQSIjQ?si=VbaHfwMBP8JBzBPR https://youtu.be/BMLtpWCdBeY?si=ieWFC3uMF8Q6r0Jy https://youtu.be/...
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