Add and Subtract within 20 Lessons
Decompose Numbers Worksheets
Decompose Numbers Worksheets Decompose Numbers Worksheets – Break apart numbers with two addends or more with theses worksheets designed to teach how to decompose whole numbers. Can be used in first grade at the end of the year, second grade, third grade and can be used in fourth grade to introduce breaking apart (distributive property)…
More...Fact Familes and the Commutative Property
Fact Families and the Commutative Property Fact Families Printable Worksheets – Teach fact families instead of counting on fingers! Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) Then make connection to subtraction 11 – 3 = 8. CCSS.Math.Content.1.OA.B.3 – Apply properties…
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