Common Core State Standards for Math
1.NBT.B.2.b
6b9cbaef-d7cc-11e8-824f-0242ac160002 6b9ccf1c-d7cc-11e8-824f-0242ac160002 6b9cd178-d7cc-11e8-824f-0242ac160002 1.NBT.B 1.NBT.B.2 1.NBT.B.2.b
The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
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