This Fluency Activity is a part of the Lesson 8, Unit 6, Grade 1. This fluency activity reviews the grade-level standard of mentally finding 10 more or 10 less than a number without having to count. Display the vertical counting sequence chart for reference. Some students may need practice writing the number after they mentally find 1 or 10 more or less. As an alternative for certain students, have them write the numbers instead of saying them.
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