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Naming and writing two-digit numbers

A simple lesson for 1st grade where we practice place value with 2-digit numbers (tens and ones), plus naming and writing these numbers.

For example, the number 2 tens 5 ones is written as 25 and is called "twenty-five".


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See also

Math Mammoth Place Value 1 — workbook for 1st grade math

Math Mammoth Grade 1 curriculum

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