1.NBT.B.2.C Worksheets, Workbooks, Lesson Plans, and Games
CCSS.MATH.CONTENT.1.NBT.B.2.C:
"The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones)."
Worksheets
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Lesson Plans
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Workbooks
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Games
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