Ages and Timelines - Subtraction on the Open Number Line
$34.95
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Explores various subtraction models (difference, removal, missing addends) and relates addition to subtraction while developing mental arithmetic strategies for subtraction with 2- and 3-digit numbers. If 3rd Grade students need more work on subtraction, this is a good unit to use to review various subtraction models (difference, removal, missing addends) and strategies for subtraction with 2- and 3-digit numbers.
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$34.95
(+$3)