lesson
Trading Ten Ones for One Ten
Understand that ten ones can be traded for one ten.

Understand that ten ones can be traded for one ten.
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4 lessons
Group loose objects into tens, count efficiently using groups of ten, and understand that ten ones can be traded for one ten.
select tools, including real objects, manipulatives, paper and pencil, and technology as appropriate, and techniques, including mental math, estimation, and number sense as appropriate, to solve problems;
analyze mathematical relationships to connect and communicate mathematical ideas; and