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Common Core · Kindergarten · Number and Operations in Base Ten

Standard K.NBT.A.1

Free lessons and printable worksheets aligned to Common Core math standard K.NBT.A.1.

4 lessons4 worksheets

Lessons for K.NBT.A.1

Subitizing and ten framesNaming the size of a very small group instantly.Lesson
Teen numbers as ten and some moreThirteen is one ten and three ones, which the English number word hides.Lesson
Ten framesA two by five grid showing a number as how full it is and how far from ten.Lesson
Tens and onesA two-digit number is some tens and some ones.Lesson

Printable Worksheets

Subitizing and ten frames worksheet (PDF)Printable worksheet with answer keyPreview
Teen numbers as ten and some more worksheet (PDF)Printable worksheet with answer keyPreview
Ten frames worksheet (PDF)Printable worksheet with answer keyPreview
Tens and ones worksheet (PDF)Printable worksheet with answer keyPreview