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Decompose Numbers Worksheets

 

decompose

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) of double-digit multiplication.  Two free printable math worksheets: Small NumbersLarger Numbers

Decomposing Videos

CCSS.Math.Content.1.OA.C.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
CCSS.Math.Content.2.NBT.B.5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

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