lesson
Counting Tens and Leftover Ones
Count groups of ten and the leftover ones to find a total greater than ten.

Count groups of ten and the leftover ones to find a total greater than 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